Merge "Floss: disallow replacing callbacks in reactables" am: 3f460836 am: 8d39d1f7

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/2291633



Change-Id: I945f98dcddd3705b901c805d7316df1dc728990c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>