floss: Refactor manager state machine am: 878639ee

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/2103185



Change-Id: I5ad071e09f91a3ece87869d4d7e0e3d8bad3406b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>