Custom extras in MediaMetadata not getting populated in MediaMetadataCompat #802

Version

Media3 1.1.1

More version details

No response

Devices that reproduce the issue

All

Devices that do not reproduce the issue

No response

Reproducible in the demo app?

Yes

Reproduction steps

1. client use media3
   val mediaMetadata = MediaMetadata.Builder().setExtras(bundleOf("my_custom_key" to "my value")).build()
   val mediaItem = MediaItem.Builder().setMediaMetadata(mediaMetadata).build()
2. sdk use media
   android.media.session.MediaController#registerCallback(android.media.session.MediaController.Callback)
   android.media.session.MediaController.Callback#onMetadataChanged
   MediaMetadataCompat does not contain "my_custom_key"
3. i found
   androidx.media3.session.MediaUtils#convertToMediaMetadataCompat
   MediaMetadata extras are not processed

Expected result

I saw this issue has been solved 756, but my problem is exactly the opposite of this one.

Actual result

MediaMetadataCompat does not contain "my_custom_key" in onMetadataChanged method

Media

Not applicable

Bug Report

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