Migrate from the deprecated native atomics

This commit is required for the aggregate build that checks the change of deprecation level for native atomics (https://jetbrains.team/p/kt/reviews/10650/timeline). Usages of native atomics from kotlin.native.concurrent package are replaced with new atomics from kotlin.concurrent because old native atomics will be deprecated with error.

NOTE: this commit is not present in develop branch, because new kotlin.concurrent atomics are only available since Kotlin 1.9.0. IT SHOULD BE REMOVED after kotlinx.coroutines updates Kotlin version to 1.9.0.

Author: mvicsokolova

kotlinx-coroutines-core/native/src/MultithreadedDispatchers.kt

@@ -8,7 +8,8 @@ import kotlinx.atomicfu.*
 import kotlinx.coroutines.channels.*
 import kotlinx.coroutines.internal.*
 import kotlin.coroutines.*
-import kotlin.native.concurrent.*
+import kotlin.concurrent.AtomicReference
+import kotlin.native.concurrent.Worker
 
 @ExperimentalCoroutinesApi
 public actual fun newSingleThreadContext(name: String): CloseableCoroutineDispatcher {

kotlinx-coroutines-core/nativeDarwin/src/Dispatchers.kt

@@ -8,7 +8,7 @@ import kotlinx.cinterop.*
 import platform.CoreFoundation.*
 import platform.darwin.*
 import kotlin.coroutines.*
-import kotlin.native.concurrent.*
+import kotlin.concurrent.*
 import kotlin.native.internal.NativePtr
 
 internal fun isMainThread(): Boolean = CFRunLoopGetCurrent() == CFRunLoopGetMain()