Hide overlay if the overlay was shown when Meta key is tapped.

Before fix : https://b.corp.google.com/issues/300492676#comment13
When Meta key is tapped in -1 screen, the toggleAllAppsFromIntent is called and
AllApps Drawer is shown in home screen. But the user is still in -1 screen.

After fix: https://b.corp.google.com/issues/300492676#comment15
When meta key is tapped in -1 screen, we hide -1 screen and transition
to 0 screen and then show AllAppsDrawer.

Bug: 300492676
Test: Manual, https://b.corp.google.com/issues/300492676#comment15
Flag: NA

Change-Id: I1234e4defdd0b53be35271b9f7567b0719eec7ac