CCodec: Duplicate format given to CCodecBufferChannel

CCodec gives mOutputFormat to CCodecBufferChannel::onWorkDone() while
also holding it in itself. CCodec may later modify mOutputFormat which
affects the format that has been given to CCodecBufferChannel. This
breaks the assumption in CCodecBufferChannel that it is the sole owner
of the format object until it is given back in
onOutputBufferAvailable(), hence it is a bug that causes a race
condition.

This CL makes CCodec give a duplicated format object to
CCodecBufferChannel instead of the original object that CCodec holds.

Test: atest \
android.hardware.camera2.cts.\
RecordingTest#testIntermediateSurfaceRecording
(Repeat multiple times)

Bug: 159662169
Change-Id: I59b747f7381728964bf3439ac3213fac24de0e1d