Merge "Avoid processing l2cap events when stack being shutdown" into main am:...

Merge "Avoid processing l2cap events when stack being shutdown" into main am: f5f35c26 am: e0c9d16b

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/3362212



Change-Id: I4e08971bca490d19ac840d0f18f364dea7466581
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>