Merge "Defer adding surface changed callback until view root is valid" into tm-qpr-dev am: c04576ad6e

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/19628908

Change-Id: I8f43ab2e866c34ccddd4c802c4892714160a66f5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>