Ignore unknown video size

[StaehliJ]

Pull request

Description

The goal of this PR is to not reset the video aspect ratio when media transition to another. When loading video size is briefly set to unknown.

Changes made

• Player.getAspectRatioAsFlow ignore unknown video size.

Checklist

• Your branch has been rebased onto the main branch.
• 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).
• All pull request status checks pass.

[github-actions]

Code Coverage

Overall Project	45.93% -0.05%	🟢
Files changed	0%	🟢

Module	Coverage
:pillarbox-player	62.52% -0.16%	🟢

Files

Module	File	Coverage
:pillarbox-player	PlayerCallbackFlow.kt	72.58% -0.77%	🟢