Merge "Execute netd callbacks on CS handler thread" into main am: f180b14d9a

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2724918

Change-Id: I929b6e04feb938da32f1410e090bb7234685c946
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>