Merge "Remove sendCloseSystemDialogs() from PhoneFallbackEventHandler" into sc-qpr1-dev am: d9ba2df119 am: 5a2619c678

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15836011

Change-Id: I0665dc366b5dd14ddacc61ad882770f36ff79456