SDK / exoplayer

- Store output format in `MediaCodecAdapterWrapper` when we get a format from
  the codec, instead of creating it on demand.
- Make format building code not audio-specific.
- Remove `MediaCodecAdapterWrapper.getConfigFormat` and instead keep track of
  the input/output formats in the renderer. This will mean that the code still
  works if an audio processor changes the audio format in future.
- Make exceptions thrown during audio rendering use the same (input) renderer
  format.
- Misc other minor cleanup.

#minor-release

PiperOrigin-RevId: 354556619