Merge "[tp] Changes GlobalScope to CoroutineScope(Dispatchers.Main) (2/2)." into udc-dev am: c78b9ad38a am: c1105d646d am: 4ad2a7df89

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/ThemePicker/+/22894548

Change-Id: I28783d0cc41ac81dc1973a8f49f0eb8783ad316c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>