libaudiohal: Handle pause-flush-resume for offloaded streams

Update StreamHalAidl to support pause-flush-resume sequence.
This is implemented by moving the asynchronous output stream
from IDLE back to ACTIVE state by issuing 'burst' command
(see stream-out-async-sm.gv).

Bug: 270552159
Test: atest CtsMediaAudioTestCases:VolumeShaperTest
Change-Id: I810fe817ef648567c30a161f1762343c9bca990b