Merge "Sanitize more of the notification text fields" into rvc-dev am: ceb7aefd6f am: 6367b4800e am: d3d22be572 am: 935e4331a5

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/12512483

Change-Id: I485b8921b73da8c3eec18ae678a5c6fadb99d9e6