ACodec: handle state machine being stuck

Bug: 110975323
Test: atest CtsMediaTestCases:EncodeDecodeTest \
            CtsMediaTestCases:EncodeVirtualDisplayTest \
            CtsMediaTestCases:EncodeVirtualDisplayWithCompositionTest \
            CtsMediaTestCases:MediaCasTest \
            CtsMediaTestCases:MediaCodecListTest \
            CtsMediaTestCases:MediaCodecTest \
            CtsMediaTestCases:MediaMetadataRetrieverTest \
            CtsMediaTestCases:MediaPlayerDrmTest \
            CtsMediaTestCases:MediaPlayerSurfaceTest \
            CtsMediaTestCases:MediaScannerTest \
            CtsMediaTestCases:ResourceManagerTest \
            CtsMediaTestCases:MediaRecorderTest
Change-Id: Iaf0a13b06fe13845a99ea19e09065b77a93bd751