Merge "Floss: Refactor callback management using `Callbacks`" am: 9f85225b...

Merge "Floss: Refactor callback management using `Callbacks`" am: 9f85225b am: eaf456e5 am: 99de149a am: 0863fda1 am: eda9a768

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/2129633



Change-Id: Ifab5b9ec9adb684143185bce225665012a8078a6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>