Merge "[Thread] make the Manager and Controller class 'final'" into main am: 077e444720 am: 924cc1cfbc am: f7df953df3

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

Change-Id: I64ddd488ceda279b08e3f9ea7f71c7a8db00d609
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>