OptIn for ExperimentalNativeApi (#3788)

* OptIn for ExperimentalNativeApi

Any.identityHashCode(), processUnhandledException(Throwable) and kotlin.native.Platform
became ExperimentalNativeApi in 1.9.0.
In 1.9.20 the opt-in requirement level of the annotation was raised to ERROR.

Author: Abduqodiri Qurbonzoda

kotlinx-coroutines-core/build.gradle

@@ -224,6 +224,7 @@ kotlin.sourceSets.configureEach {
     if (it.name in ["jvmMain", "jsMain", "concurrentMain", "commonMain"]) return
     languageSettings {
         optIn('kotlinx.cinterop.ExperimentalForeignApi')
+        optIn('kotlin.experimental.ExperimentalNativeApi')
     }
 }
 

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

@@ -9,7 +9,6 @@ import kotlin.native.*
 
 internal actual val DEBUG: Boolean = false
 
-@OptIn(ExperimentalStdlibApi::class)
 internal actual val Any.hexAddress: String get() = identityHashCode().toUInt().toString(16)
 
 internal actual val Any.classSimpleName: String get() = this::class.simpleName ?: "Unknown"