NonConcurrentlyModifiable concurrency failures should identify both parties

[mcumings]

trafficstars

Proposed fix for #3395 - Capturing the stack frames for both the reader+writer or the writer+writer, depending upon the scenario.

This results in a thrown exception which looks similar to the following:

Dispatchers.Main is used concurrently with setting it
java.lang.IllegalStateException: Dispatchers.Main is used concurrently with setting it
	at kotlinx.coroutines.test.internal.TestMainDispatcher$NonConcurrentlyModifiable.concurrentRW(TestMainDispatcher.kt:70)
	at kotlinx.coroutines.test.internal.TestMainDispatcher$NonConcurrentlyModifiable.setValue(TestMainDispatcher.kt:84)
	at kotlinx.coroutines.test.internal.TestMainDispatcher.resetDispatcher(TestMainDispatcher.kt:40)
	at kotlinx.coroutines.test.TestDispatchers.resetMain(TestDispatchers.kt:37)
	at com.elided.TestCoroutineRule.after(TestCoroutineRule.kt:40)
	at org.junit.rules.ExternalResource$1.evaluate(ExternalResource.java:59)
	at org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:61)
	at org.mockito.internal.junit.JUnitSessionStore$1.evaluateSafely(JUnitSessionStore.java:55)
	at org.mockito.internal.junit.JUnitSessionStore$1.evaluate(JUnitSessionStore.java:43)
	at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
	at org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
	at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
	at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
	at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
	[ …elided for brevity… ]
Caused by: java.lang.Throwable
	at kotlinx.coroutines.test.internal.TestMainDispatcher$NonConcurrentlyModifiable.getValue(TestMainDispatcher.kt:74)
	at kotlinx.coroutines.test.internal.TestMainDispatcher.isDispatchNeeded(TestMainDispatcher.kt:31)
	at kotlinx.coroutines.DispatchedTaskKt.dispatch(DispatchedTask.kt:158)
	at kotlinx.coroutines.CancellableContinuationImpl.dispatchResume(CancellableContinuationImpl.kt:397)
	at kotlinx.coroutines.CancellableContinuationImpl.completeResume(CancellableContinuationImpl.kt:513)
	at kotlinx.coroutines.channels.AbstractChannel$ReceiveElement.completeResumeReceive(AbstractChannel.kt:908)
	at kotlinx.coroutines.channels.ArrayChannel.offerInternal(ArrayChannel.kt:83)
	at kotlinx.coroutines.channels.AbstractSendChannel.send(AbstractChannel.kt:134)
	at kotlinx.coroutines.channels.ChannelCoroutine.send(ChannelCoroutine.kt)
	at kotlinx.coroutines.flow.internal.SendingCollector.emit(SendingCollector.kt:19)
	at kotlinx.coroutines.flow.internal.SafeCollectorKt$emitFun$1.invoke(SafeCollector.kt:15)
	at kotlinx.coroutines.flow.internal.SafeCollectorKt$emitFun$1.invoke(SafeCollector.kt:15)
	at kotlinx.coroutines.flow.internal.SafeCollector.emit(SafeCollector.kt:77)
	at kotlinx.coroutines.flow.internal.SafeCollector.emit(SafeCollector.kt:59)
	at com.elided.Elided$transformModules$1.invokeSuspend(Elided.kt:142)
	at com.elided.Elided$transformModules$1.invoke(Elided.kt)
	at com.elided.Elided$transformModules$1.invoke(Elided.kt)
	at kotlinx.coroutines.flow.SafeFlow.collectSafely(Builders.kt:61)
	at kotlinx.coroutines.flow.AbstractFlow.collect(Flow.kt:227)
	at kotlinx.coroutines.flow.internal.ChannelFlowOperatorImpl.flowCollect(ChannelFlow.kt:195)
	at kotlinx.coroutines.flow.internal.ChannelFlowOperator.collectTo$suspendImpl(ChannelFlow.kt:157)
	at kotlinx.coroutines.flow.internal.ChannelFlowOperator.collectTo(ChannelFlow.kt)
	at kotlinx.coroutines.flow.internal.ChannelFlow$collectToFun$1.invokeSuspend(ChannelFlow.kt:60)
	at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
	at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106)
	at kotlinx.coroutines.internal.LimitedDispatcher.run(LimitedDispatcher.kt:39)
	at kotlinx.coroutines.scheduling.TaskImpl.run(Tasks.kt:95)
	at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:571)
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:750)
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:678)
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:665)