Fixes the issue Launcher state propagation is slower than onDeferredResume.

There's currently a bug prevents Launcher release drag lock for two step
widgets. Supposedly, onDeferredResume should release the drag lock; However,
in 3-button navigation mode, the transition from Overview -> Normal is
triggered in Launcher#onNewIntent, which happens after onDeferredResume.

This issue is not reproducible with gesture navigation because its
transition from Overview -> Normal is handled in NavBarToHomeTouchController

Test: manual verified with following steps
1. Enable 3-button navigation
2. Long press in WorkSpace -> Widgets
3. Drag Settings Widget to WorkSpace
4. When the config activity is shown, press "recents" button to see Overview
5. press "home" button to go back to workspace
6. repeat 2 and 3, verify the widget can be dragged
Bug: 149659788

Change-Id: I396ffa8a7db44bf3872a10de4208340a99a7efe8
(cherry picked from commit 3bf889a0)