Effect: Move thread priority updates from threadLoop

Now updated in prepareForProcessing(), which avoids race
with close().

Test: atest AudioEffectTest
Test: Run spatial audio
Test: adb shell 'uclampset -a -p $(pgrep -of android.hardware.audio.service)'
Bug: 265055114
Change-Id: I31de38d54aa42d7ae3cc87d0afc4a410fc3336ad
1 file changed