Only call onExtraWindowDestroy if nonNullDialog has been shown

Author: zoontek

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/views/modal/ReactModalHostView.kt

@@ -196,10 +196,10 @@ public class ReactModalHostView(context: ThemedReactContext) :
     UiThreadUtil.assertOnUiThread()
 
     dialog?.let { nonNullDialog ->
-      nonNullDialog.window?.let { window ->
-        (context as ThemedReactContext).onExtraWindowDestroy(window)
-      }
       if (nonNullDialog.isShowing) {
+        nonNullDialog.window?.let { window ->
+          (context as ThemedReactContext).onExtraWindowDestroy(window)
+        }
         val dialogContext =
             ContextUtils.findContextOfType(nonNullDialog.context, Activity::class.java)
         if (dialogContext == null || !dialogContext.isFinishing) {