Merge "Add flag rfcomm_fix_mux_collision_handling" into main am: 6aeb7739

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/3511250



Change-Id: I969d143943a62c5661189562c3bf24c9920174a2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>