[automerger skipped] Fix the animation glitch when NSSL adds and removes a HUN...

[automerger skipped] Fix the animation glitch when NSSL adds and removes a HUN in the same frame. am: 5d54f3c7 -s ours am: b9b0d899 -s ours am: 586a4cb0 -s ours am: 21e4a912 -s ours am: fcb49e9e -s ours

am skip reason: Merged-In I755fff6944da0699d9cb7e6b2456e4811f7888d5 with SHA-1 878e9322 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17061641

Change-Id: I7e45f2db5f83cfc326cd778b1ee65c195546e549