Add missing AudioSessionIdChanged stub to android MediaElement

[ne0rrmatrix]

-Bug Fix

Description of Change

Users have reported a bug that can be fixed by adding another method to MediaElement stubs for Player.Listener Adding OnAudioSessionIdChanged(int audioSessionId) should fix the linked issue.

Linked Issues

• Fixes [BUG] Missing OnAudioSessionIdChanged method causes AbstractMethodError crash on Android #2989

PR Checklist

• Has a linked Issue, and the Issue has been approved(bug) or Championed (feature/proposal)
• Has tests (if omitted, state reason in description)
• Has samples (if omitted, state reason in description)
• Rebased on top of main at time of PR
• Changes adhere to coding standard
• Documentation created or updated: https://github.com/MicrosoftDocs/CommunityToolkit/pulls

Additional information

[Copilot]

Pull request overview

This PR adds a missing method stub OnAudioSessionIdChanged(int audioSessionId) to the Android MediaManager's Player.Listener interface implementation to fix a bug where the interface was incomplete.

• Adds the missing OnAudioSessionIdChanged method stub to MediaManager
• Follows the existing pattern of empty method implementations for unused Player.Listener callbacks
• Properly placed in alphabetical order among other stub methods