Merge "C2SoftMpeg2Dec: disable keep threads active for entire sequence" into main am: b56deb051f am: ab784eeb30

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/3107779

Change-Id: Ic6d87ded45ac2590517331deb0a738b02c7d54d8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>