Merge "Use operator<< with String16 rather than char16_t*" into main am: 8d3b50ebb5 am: f72a1983df

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/2898895

Change-Id: I309d0c020fe35f987666dcd1db5db20f0373c392
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>