Merge "Add demux to mFrontendTests" into android14-tests-dev am: f91c15c69e am: 6b983a3723

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2886668

Change-Id: I89952ee005dc90e6ea6f3773d0c00554989db31b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>