Merge "[Thread] make the Manager and Controller class 'final'" into main am: 077e444720 am: 26da4c79af am: 031900f2ff

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2793232

Change-Id: Ie4369ca6a141c01f821822e709b5bedf496bc1fa
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>