Merge "Sharesheet: be more defensive about un-unparcelable intents." into...

Merge "Sharesheet: be more defensive about un-unparcelable intents." into sc-dev am: a1d1a382 am: 71ea7c11

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15374840

Change-Id: I93a27e32648d6fea5b73ca9f2b487c9631d76d9c