Cherry pick PR #2727: [media] Revise OpusAudioDecoder::Reset() via OPUS_RESET_STATE #1680

Job	Run time
stub / initialize	32s
stub / docker-build-image	32s
stub / docker-unittest-image	0s
stub / stub_devel	6m 8s
stub / stub_debug	6m 35s
stub / stub_qa	5m 47s
stub / stub_gold	4m 41s
stub / ${{ matrix.name }}_${{ matrix.shard }}_test	0s
stub / ${{ matrix.name }}_on_device_${{ matrix.shard }}	0s
stub / on-host-unit-test-report	0s
	24m 15s

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