Revert "fix(android): use ConcurrentHashMap for listeners to prevent CME"

This reverts commit 54c28c1.

Author: mfazekas

android/src/main/java/com/margelo/nitro/rive/BaseHybridViewModelPropertyImpl.kt

@@ -12,14 +12,13 @@ import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.drop
 import java.lang.ref.WeakReference
 import java.util.UUID
-import java.util.concurrent.ConcurrentHashMap
 
 @Keep
 @DoNotStrip
 class BaseHybridViewModelPropertyImpl<T> : BaseHybridViewModelProperty<T> {
   override var scope: CoroutineScope? = null
   override var job: Job? = null
-  override val listeners = ConcurrentHashMap<String, (T) -> Unit>()
+  override val listeners = mutableMapOf<String, (T) -> Unit>()
 
   override fun ensureValueListenerJob(valueFlow: Flow<T>, drop: Int) {
     if (scope == null) {
@@ -35,7 +34,7 @@ class BaseHybridViewModelPropertyImpl<T> : BaseHybridViewModelProperty<T> {
   }
 
   override fun onChanged(value: T) {
-    listeners.values.forEach { listener ->
+    listeners.values.toList().forEach { listener ->
       listener(value)
     }
   }