Merge "[DO NOT MERGE] Make PendingIntents in screenshots immutable" into rvc-dev am: 637a90a745 am: fe4462eecb

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/13950908

Change-Id: I2e962bb8a8d3963a36bde94dd61a581ddc648f7e