Share eagerly current player

[StaehliJ]

Description

The goal of this PR is to fix CastPlayer.isCastSessionAvailableAsFlow when used with collectAsStateWithLifecycle and the application goes in background without going connecting to a remote session.

Changes made

• currentPlayer using SharingStarted.Eagerly.

Checklist

• APIs have been properly documented (if relevant).
• The documentation has been updated (if relevant).
• New unit tests have been written (if relevant).
• The demo has been updated (if relevant).

[github-actions]

Code Coverage

Overall Project	48.11% -0.04%	🟢
Files changed	0%	🟢

Module	Coverage
:pillarbox-cast	29.21% -0.37%	🟢

Files

Module	File	Coverage
:pillarbox-cast	CastPlayerSynchronizer.kt	0% -5.76%	🟢