[automerger skipped] Fix dangling pointer issues post Bluetooth shutdown cleanup for delayed task in main thread. am: 3f99c21d -s ours

am skip reason: Merged-In I0411becd603ccfac7e77ef45c33f2560b3b02ac8 with SHA-1 ba0d0fc5 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/21107237



Change-Id: If810ecaea4ab4e6d72c692c4f12314283dbdb415
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>