Merge "Merge "Fix potential crash in SearchFragment#dismiss()." into rvc-dev am: 51f5c340 am: c804ee95 am: 06d80c29" into rvc-qpr-dev-plus-aosp am: a35e50ac am: 7b05e8db

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/DocumentsUI/+/12042990

Change-Id: Ibbdd1162a5abad5e0d051f7256d04420ee3fa923