Migrate A2DP Source enable/disable to sysprops am: 1a7dae08 am: 4f662030

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/2060361



Change-Id: I08a4dfa74c6a71dcaf545b0d57891a1f2c32fcfd
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>