[video_player_platform_interface] Adds setter for allowing background playback This PR is a subset of #9212 - it only adds platform interface changes. Partially resolves #62739.

[ArvidNy]

Adds setter for allowing background playback

This PR is a subset of #9212 - it only adds platform interface changes.

Partially resolves #62739.

Pre-Review Checklist

• I read the Contributor Guide and followed the process outlined there for submitting PRs.
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• The title of the PR starts with the name of the package surrounded by square brackets, e.g. [shared_preferences]
• I linked to at least one issue that this PR fixes in the description above.
• I updated pubspec.yaml with an appropriate new version according to the pub versioning philosophy, or I have commented below to indicate which version change exemption this PR falls under¹.
• I updated CHANGELOG.md to add a description of the change, following repository CHANGELOG style, or I have commented below to indicate which CHANGELOG exemption this PR falls under¹.
• I updated/added any relevant documentation (doc comments with ///).
• I added new tests to check the change I am making, or I have commented below to indicate which test exemption this PR falls under¹.
• All existing and new tests are passing.

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[flutter-dashboard]

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[gemini-code-assist]

Code Review

This pull request introduces a new method setAllowBackgroundPlayback to the video_player_platform_interface, allowing for dynamic control over background video playback. The changes include adding the method to the VideoPlayerPlatform abstract class, updating the CHANGELOG.md, and incrementing the package version. My feedback focuses on improving the clarity and accuracy of the documentation for this new feature.

[stuartmorgan-g]

Sorry for the delay in reviewing this sub-PR; I missed the notification among the email updates from #9212

[auto-submit]

autosubmit label was removed for flutter/packages/10054, because - The status or check suite Linux repo_checks has failed. Please fix the issues identified (or deflake) before re-applying this label.