Merge "csis: Fix possible crash when group got removed" am: 2cc75e03

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/2523741



Change-Id: If62a55cbc1897f7f5d2c9f9575ad613cb8b63136
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>