Bind PlayerChange before handlers to report correct isLocalPlayer (#7376)

PlayerChange was firing before the subscriber rebound its player, so the
first media session update could send `isLocalPlayer: false` (player undefined)
and Android treated playback as remote (cast volume UI). Rewire PlaybackSubscriber
so PlayerChange binds the current player before invoking handlers, ensuring media
session updates always have a bound player and report the correct local/remote
state.

Fixes: https://github.com/jellyfin/jellyfin-android/issues/1745
Fixes: https://github.com/jellyfin/jellyfin-android/issues/1854

src/apps/stable/features/playback/utils/playbackSubscriber.ts

@@ -78,12 +78,14 @@ export abstract class PlaybackSubscriber {
     constructor(
         protected readonly playbackManager: PlaybackManager
     ) {
+        // Bind player events before invoking any player change handlers
+        Events.on(playbackManager, PlaybackManagerEvent.PlayerChange, this.bindPlayerEvents.bind(this));
+
         Object.entries(this.playbackManagerEvents).forEach(([event, handler]) => {
             if (handler) Events.on(playbackManager, event, handler);
         });
 
         this.bindPlayerEvents();
-        Events.on(playbackManager, PlaybackManagerEvent.PlayerChange, this.bindPlayerEvents.bind(this));
     }
 
     private bindPlayerEvents() {