Merge "Delete the delay for keeping tasksnapshot on screen." into sc-dev am:...

Merge "Delete the delay for keeping tasksnapshot on screen." into sc-dev am: c56f67e7 am: dd810b3d

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/14609912

Change-Id: I1833edd48678730c9b9584f97f7ba1c93cd9630d