Merge "Check whether the running task view is non null before setting it to be not clickable for live tile" into sc-dev am: 6bdd00fa25

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/13431431

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Ie8a2934bb5329c42fc8f5078d3deaa3d27fd2217