Fix exceptions ignored in select code

[Thomas-Vos]

Properly pass exceptions so they can be detected when using the sockets. Maybe this will also help find any remaining issues in the selection code.

[Thomas-Vos]

The actual stack trace that is thrown in the test on Native unfortunately only points to internal Ktor code (on JVM it is better, but not Android). In the past the Ktor code was changed to catch and ignore these exceptions, https://youtrack.jetbrains.com/issue/KTOR-2914/java.lang.IllegalArgumentException-Failed-requirement.-in-SelectorManagerSupport. I don't know if something changed so they can be caught now, or if that was always possible already, and the stack trace doesn't help with this. There is no way to know where in the app it crashes. I feel like no longer ignoring exceptions will cause issues again, but ignoring isn't a good solution. What to do about this?

kotlinx.io.IOException: Selector closed.
	at kotlin.Throwable#<init>(/opt/buildAgent/work/b5c630f73501b353/kotlin/kotlin-native/runtime/src/main/kotlin/kotlin/Throwable.kt:30)
	at kotlin.Exception#<init>(/opt/buildAgent/work/b5c630f73501b353/kotlin/kotlin-native/runtime/src/main/kotlin/kotlin/Exceptions.kt:23)
	at kotlinx.io.IOException#<init>(/opt/buildAgent/work/22e3a7db6b861ba7/core/native/src/-NonJvmPlatform.kt:26)
	at io.ktor.network.selector.WorkerSelectorManager#select#suspend(/Users/thomas/GitHub/ktor/ktor-network/posix/src/io/ktor/network/selector/WorkerSelectorManager.kt:35)
	at io.ktor.network.selector.SelectorManager#select#suspend(/Users/thomas/GitHub/ktor/ktor-network/posix/src/io/ktor/network/selector/SelectorManager.kt:35)
	at io.ktor.network.sockets.DatagramSocketNative.$readDatagramCOROUTINE$0.invokeSuspend#internal(/Users/thomas/GitHub/ktor/ktor-network/posix/src/io/ktor/network/sockets/DatagramSocketNative.kt:66)
	at io.ktor.network.sockets.DatagramSocketNative.readDatagram#internal(/Users/thomas/GitHub/ktor/ktor-network/posix/src/io/ktor/network/sockets/DatagramSocketNative.kt:62)
	at io.ktor.network.sockets.DatagramSocketNative.$<init>$lambda$0COROUTINE$1.invokeSuspend#internal(/Users/thomas/GitHub/ktor/ktor-network/posix/src/io/ktor/network/sockets/DatagramSocketNative.kt:43)
	at io.ktor.network.sockets.DatagramSocketNative.<init>$lambda$0#internal(/Users/thomas/GitHub/ktor/ktor-network/posix/src/io/ktor/network/sockets/DatagramSocketNative.kt:40)
	at io.ktor.network.sockets.DatagramSocketNative.$<init>$lambda$0$FUNCTION_REFERENCE$0.invoke#internal(/Users/thomas/GitHub/ktor/ktor-network/posix/src/io/ktor/network/sockets/DatagramSocketNative.kt:40)
	at kotlin.Function2#invoke(/Users/teamcity/.gradle/daemon/8.9/[K][Suspend]Functions:1)
	at kotlin.coroutines.intrinsics.object-4.invokeSuspend#internal(/opt/buildAgent/work/b5c630f73501b353/kotlin/kotlin-native/runtime/src/main/kotlin/kotlin/coroutines/intrinsics/IntrinsicsNative.kt:254)
	at kotlin.coroutines.native.internal.BaseContinuationImpl#invokeSuspend(/opt/buildAgent/work/b5c630f73501b353/kotlin/kotlin-native/runtime/src/main/kotlin/kotlin/coroutines/ContinuationImpl.kt:50)
	at kotlin.coroutines.native.internal.BaseContinuationImpl#resumeWith(/opt/buildAgent/work/b5c630f73501b353/kotlin/kotlin-native/runtime/src/main/kotlin/kotlin/coroutines/ContinuationImpl.kt:30)
	at kotlin.coroutines.Continuation#resumeWith(/opt/buildAgent/work/b5c630f73501b353/kotlin/libraries/stdlib/src/kotlin/coroutines/Continuation.kt:26)
	at kotlinx.coroutines.DispatchedTask#run(/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/common/src/internal/DispatchedTask.kt:100)
	at kotlinx.coroutines.Runnable#run(/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/native/src/Runnable.kt:12)
	at kotlinx.coroutines.internal.LimitedDispatcher.Worker.run#internal(/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/common/src/internal/LimitedDispatcher.kt:113)
	at kotlinx.coroutines.Runnable#run(/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/native/src/Runnable.kt:12)
	at kotlinx.coroutines.MultiWorkerDispatcher.$workerRunLoop$lambda$2COROUTINE$0.invokeSuspend#internal(/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/native/src/MultithreadedDispatchers.kt:110)
	at kotlinx.coroutines.MultiWorkerDispatcher.workerRunLoop$lambda$2#internal(/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/native/src/MultithreadedDispatchers.kt:102)
	at kotlinx.coroutines.MultiWorkerDispatcher.$workerRunLoop$lambda$2$FUNCTION_REFERENCE$4.invoke#internal(/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/native/src/MultithreadedDispatchers.kt:102)
	at kotlin.Function2#invoke(/Users/teamcity/.gradle/daemon/8.9/[K][Suspend]Functions:1)
	at kotlin.coroutines.intrinsics.object-4.invokeSuspend#internal(/opt/buildAgent/work/b5c630f73501b353/kotlin/kotlin-native/runtime/src/main/kotlin/kotlin/coroutines/intrinsics/IntrinsicsNative.kt:254)
	at kotlin.coroutines.native.internal.BaseContinuationImpl#invokeSuspend(/opt/buildAgent/work/b5c630f73501b353/kotlin/kotlin-native/runtime/src/main/kotlin/kotlin/coroutines/ContinuationImpl.kt:50)
	at kotlin.coroutines.native.internal.BaseContinuationImpl#resumeWith(/opt/buildAgent/work/b5c630f73501b353/kotlin/kotlin-native/runtime/src/main/kotlin/kotlin/coroutines/ContinuationImpl.kt:30)
	at kotlin.coroutines.Continuation#resumeWith(/opt/buildAgent/work/b5c630f73501b353/kotlin/libraries/stdlib/src/kotlin/coroutines/Continuation.kt:26)
	at kotlinx.coroutines.DispatchedTask#run(/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/common/src/internal/DispatchedTask.kt:100)
	at kotlinx.coroutines.Runnable#run(/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/native/src/Runnable.kt:12)
	at kotlinx.coroutines.EventLoopImplBase#processNextEvent(/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/common/src/EventLoop.common.kt:263)
	at kotlinx.coroutines.EventLoop#processNextEvent(/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/common/src/EventLoop.common.kt:49)
	at kotlinx.coroutines.BlockingCoroutine.joinBlocking#internal(/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/native/src/Builders.kt:130)
	at kotlinx.coroutines#runBlocking(/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/native/src/Builders.kt:69)
	at kotlinx.coroutines#runBlocking$default(/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/native/src/Builders.kt:45)
	at kotlinx.coroutines.MultiWorkerDispatcher.workerRunLoop#internal(/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/native/src/MultithreadedDispatchers.kt:102)
	at kotlinx.coroutines.MultiWorkerDispatcher.<init>$lambda$1$lambda$0#internal(/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/native/src/MultithreadedDispatchers.kt:86)
	at kotlinx.coroutines.MultiWorkerDispatcher.$<init>$lambda$1$lambda$0$FUNCTION_REFERENCE$6.invoke#internal(/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/native/src/MultithreadedDispatchers.kt:86)
	at kotlinx.coroutines.MultiWorkerDispatcher.$<init>$lambda$1$lambda$0$FUNCTION_REFERENCE$6.$<bridge-DNN>invoke(/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/native/src/MultithreadedDispatchers.kt:86)
	at kotlin.Function0#invoke(/Users/teamcity/.gradle/daemon/8.9/[K][Suspend]Functions:1)
	at <global>.WorkerLaunchpad(/opt/buildAgent/work/b5c630f73501b353/kotlin/kotlin-native/runtime/src/main/kotlin/kotlin/native/concurrent/Internal.kt:95)
	at <global>._ZN6Worker19processQueueElementEb(Unknown Source)
	at <global>._ZN12_GLOBAL__N_113workerRoutineEPv(Unknown Source)
	at <global>._pthread_start(Unknown Source)
	at <global>.thread_start(Unknown Source)

Also it seems that after failure calling awaitClosed will throw CancellationException, is that expected? See for example io.ktor.network.sockets.tests.UDPSocketTest.testBroadcastSuccessful[mingwX64] at https://ktor.teamcity.com/buildConfiguration/Ktor_KtorCore_All/321802