[video_player] Calls onDestroy instead of initialize in onDetachedFromEngine (#6501)

In the `onDetachedFromEngine` function, the `onDestroy` method should be called instead of the `initialize` method, even though the implementation of the two functions is no different.

```java
  private void onDestroy() {
    // The whole FlutterView is being destroyed. Here we release resources acquired for all
    // instances
    // of VideoPlayer. Once flutter/flutter#19358 is resolved this may
    // be replaced with just asserting that videoPlayers.isEmpty().
    // flutter/flutter#20989 tracks this.
    disposeAllPlayers();
  }

  public void initialize() {
    disposeAllPlayers();
  }
```

Author: 0xZOne

packages/video_player/video_player_android/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 2.4.14
+
+* Calls `onDestroy` instead of `initialize` in onDetachedFromEngine.
+
 ## 2.4.13
 
 * Updates minSdkVersion to 19.

packages/video_player/video_player_android/android/src/main/java/io/flutter/plugins/videoplayer/VideoPlayerPlugin.java

@@ -95,7 +95,7 @@ public void onDetachedFromEngine(@NonNull FlutterPluginBinding binding) {
     }
     flutterState.stopListening(binding.getBinaryMessenger());
     flutterState = null;
-    initialize();
+    onDestroy();
   }
 
   private void disposeAllPlayers() {
@@ -105,7 +105,7 @@ private void disposeAllPlayers() {
     videoPlayers.clear();
   }
 
-  private void onDestroy() {
+  public void onDestroy() {
     // The whole FlutterView is being destroyed. Here we release resources acquired for all
     // instances
     // of VideoPlayer. Once https://github.com/flutter/flutter/issues/19358 is resolved this may

packages/video_player/video_player_android/example/android/app/src/test/java/io/flutter/plugins/videoplayerexample/FlutterActivityTest.java

@@ -45,6 +45,6 @@ public void disposeAllPlayers() {
 
     engine.destroy();
     verify(videoPlayerPlugin, times(1)).onDetachedFromEngine(pluginBindingCaptor.capture());
-    verify(videoPlayerPlugin, times(1)).initialize();
+    verify(videoPlayerPlugin, times(1)).onDestroy();
   }
 }

packages/video_player/video_player_android/pubspec.yaml

@@ -2,7 +2,7 @@ name: video_player_android
 description: Android implementation of the video_player plugin.
 repository: https://github.com/flutter/packages/tree/main/packages/video_player/video_player_android
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+video_player%22
-version: 2.4.13
+version: 2.4.14
 
 environment:
   sdk: ^3.2.0