Merge "[Thread] define flag thread_user_restriction_enabled" into main am: e32111c8fc am: 3c97dd5e18

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2897512

Change-Id: I51e18cbdbd62e5e3733db534a2b79c982e26dcd1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>