when ScoManagedByAudioEnabled, Bluetooth don't suspend a2dp or LE Audio

Audio Framework does the suspend and un-suspend

Bug: 343773577
Bug: 315234036
Flag: com::android::bluetooth::flags::is_sco_managed_by_audio
Test: atest HeadsetStateMachineTest
Change-Id: I4868ac86100d5fdf9f788f5c67f032bb1c0c8231