Merge "Remove sendCloseSystemDialogs() from PhoneFallbackEventHandler" into sc-qpr1-dev am: d9ba2df119 am: 5a2619c678 am: 2e3c6e5724

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

Change-Id: I49e47a24a5aacc746d9e9e3e67cad42c75a38b16