DO NOT MERGE. Ensure screen pinning UI appears immediately after setting changes.

Fixes an issue where the screen pinning UI in the Overview space would
not appear on the first load after changing the setting, this was because
the updated flag was not read before the tasks were preloaded prior to
entering the Overview space.

Bug: 18986736
Change-Id: I50dc9ff6d369fb3f2593f2bf2c1dc4608878820f