Make Media Controls work better after battery eviction

[coezbek]

The patch allows to restart AntennaPod after being removed by the battery saver from the Media Control. It doesn't start the media, but restores the interface in Media Control to then to start playing.

Description

This improves #7134 and issue #6576. It doesn't really fix the underlying issue that AntennaPod is quickly evicted from memory and can't resume playing from Media Controls.

This patch enables that pressing the play button from Media Controls for an evicted AntennaPod will start AntennaPod again and shows the play controls. The user can then press play again to start the podcast.

I hope this is helpful.

Checklist

• I have read the contribution guidelines: https://github.com/AntennaPod/AntennaPod/blob/develop/CONTRIBUTING.md#submit-a-pull-request
• I have performed a self-review of my code
• I have run the automated code checks using ./gradlew checkstyle spotbugsPlayDebug spotbugsDebug :app:lintPlayDebug
• My code follows the style guidelines of the AntennaPod project: https://github.com/AntennaPod/AntennaPod/wiki/Code-style
• I have mentioned the corresponding issue and the relevant keyword (e.g., "Closes: #xy") in the description (see https://docs.github.com/en/issues/tracking-your-work-with-issues/linking-a-pull-request-to-an-issue)
• If it is a core feature, I have added automated tests

[ByteHamster]

Thanks for your PR. Instead of adding workarounds for the existing media service, I would rather try upgrading to media3 media sessions (see #6608). However, it seems that something similar to your fix is needed there as well. The documentation for media3 is really bad, one has to dig through GitHub issues in that library to find solutions for edge cases. Their own sample app doesn't even support the media controls after battery eviction properly.

Edit: Sorry for the duplicate comment. That happens when trying to debug MediaSession stuff while writing a GitHub comment at the same time.