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

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

Change-Id: Id1c8812b5618b5ce3f06c32398e1b2301ce6a852
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>