Merge "Set elevation of popup and arrow to match. This ensures no shadow overlap." into sc-dev am: 26a485bb2a am: 2178eedc6a am: 972ee06cdd

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15147164

Change-Id: Ifb381a185753e1655908f55cfd1bebc5be1f0c08