audio: Add missing throttling and error handling to 'out_' thread

A follow-up to aosp/3467287, adding missing CPU throttling
and error handling from the MonoPipe.

Bug: 364960013
Bug: 394103912
Test: atest CtsMediaAudioTestCases
Test: atest VtsHalAudioCoreTargetTest
Change-Id: I14ac36edb2c9307b4a4e252b2ee866b6a845decd
1 file changed