
Deprecates setContext() and moves the required Context arg into the constructor.
This way, the parameter can later be final and non-null, per the comment at:
79f03bb135/depot/google3/third_party/java_src/android_libs/media/libraries/transformer/src/main/java/androidx/media3/transformer/TranscodingTransformer.java (97L)
Also, fixes setOutputMimeType_unsupportedMimeType_throws by providing a context
in the builder, and updating the FrameworkMuxer#supportsOutputMimeType to catch
IllegalArgumentExceptions thrown by FrameworkMuxer#mimeTypeToMuxerOutputFormat.
PiperOrigin-RevId: 412053564