Launcher3: Fix gesture navigation fail to move to bottom

Go to the recents page from all apps page and rotate to horizontal, at
last switch to one app that only support portrait display, we will see
the gesture navigation always at device right and not move to bottom.
At this scenario, launcher state switch from overview to all apps, but
launcher not notify systemui update gesture navigation display.

To slove this, launcher must notify systemui update gesture navigation
display when launcher state switch from overview to all apps.

CRs-Fixed: 2828560

Change-Id: Ib2319045d3851b43dadd6a0e06ac65be2e5227f7