Separate TaskView translationX into dismiss + offset translations am: 5662a653da

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/13370324

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I60d9f219eed57dfab08d815ecf6ba834b546e4df