Merge "audio: Fix MonoPipe ownership in StreamRemoteSubmix" into main am: 0cdd9a51e4

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/3479190

Change-Id: I0f7d73713265950d1d7bcdc64f6111607fda83eb
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>