Merge "gatt: Add upper tester for Multiple Variable Len notification" into tm-d1-dev am: 14442992

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/19135250



Change-Id: I83a4e9ac0bbd1c3daa60dab4162880f3cadcde37
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>