Merge "Sharesheet: be more defensive about un-unparcelable intents." into sc-dev am: a1d1a382 am: 82cee4bd am: 11d98aa9

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

Change-Id: Ibfdaeb6de6dca6479b7169ec204ebde84b849552