Merge "Flag for Android Headtracker Service" into main am: 52449dc7

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/3047042



Change-Id: I9a98ec17e85ece2c5b4afa3678e051d54c0e43a7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>