Auto merge of #24265 - sreeise:track_selection, r=jdm

Integrates media track selection

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Updates audio/video track selection to use the servo media player track selection methods.

This is technically only a partial fix because only one audio track can be set at a time and servo_media needs to be updated to handle multiple audio tracks. Once/if this goes through I can file follow up issue for that.

I believe this also inadvertently covers at least some of #22912

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- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix #22799 (GitHub issue number if applicable)

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- [ ] There are tests for these changes OR
- [x] These changes do not require tests because -  This probably should have a test case. But I am not aware of a way, at least not from servo, to test that the actual audio or video changed in the underlying player or on screen.

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