Merge "Use activityStarter of KeyguardQuickAffordancePickerViewModel to launch button intent" into udc-dev am: ad71d7489b

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/ThemePicker/+/22893579

Change-Id: I8e707923051634b30aace85957343730da0eb7d9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>