* Add `Listener` in `MediaSession` with method `onNotificationRefreshRequired(MediaSession)`.
* Add `MediaSessionService` as the listener of the `MediaSession` when `MediaSession` is added to `MediaSessionService`
* Load bitmap when update metadata in `MediaSessionLegacyStub` and call `onNotificationRefreshRequired` when bitmap asynchronously arrives.
PiperOrigin-RevId: 485376145
(cherry picked from commit 77fedd8d7d511ff97b0441aa9136d0f1aaecef4b)
Once a controller bound to a MediaSessionService unbinds, this service
may be destroyed immediately if this was the last bound controller and
the service isn't started in the foreground.
At the time of releasing the controller, there may still be pending
commands that need to be handled by the session service. These commands
may cause the session service to post a foreground notification to
keep it alive. So to avoid the destruction of the service while these
commands are still handled, we need to keep the controller bound.
We also add a timeout in case the session tasks are never completed
by the session implementation. In case the controller is destroyed,
the unbinding happens automatically by the system.
PiperOrigin-RevId: 463802220
(cherry picked from commit ac42b593cc3280b866d42cdc11d57bb031b39757)
