Ensure DefaultAudioSink doesn't store non-application Context

The Context is currently passed right down from ExoPlayer.Builder
without ever converting it to the application context. This may
cause memory leaks if a Player is kept across activities/service
lifecycles.

PiperOrigin-RevId: 747835487

Author: tonihei

libraries/exoplayer/src/main/java/androidx/media3/exoplayer/audio/DefaultAudioOffloadSupportProvider.java

@@ -62,7 +62,7 @@ public DefaultAudioOffloadSupportProvider() {
    *     offload variable rate support.
    */
   public DefaultAudioOffloadSupportProvider(@Nullable Context context) {
-    this.context = context;
+    this.context = context == null ? null : context.getApplicationContext();
   }
 
   @Override

libraries/exoplayer/src/main/java/androidx/media3/exoplayer/audio/DefaultAudioSink.java

@@ -592,7 +592,7 @@ public DefaultAudioSink build() {
 
   @RequiresNonNull("#1.audioProcessorChain")
   private DefaultAudioSink(Builder builder) {
-    context = builder.context;
+    context = builder.context == null ? null : builder.context.getApplicationContext();
     audioAttributes = AudioAttributes.DEFAULT;
     audioCapabilities = context != null ? null : builder.audioCapabilities;
     audioProcessorChain = builder.audioProcessorChain;