Flip flag check in KeyguardStatusBarController

This flag check was wrong, we only expect to hit
KeyguardStatusBarViewController.updateHeadsUp() when the feature flag is
off.

Fixes: 342185467
Test: go to dozing while SceneContainer is off
Flag: com.android.systemui.scene_container
Change-Id: I430b867a1370e1771a577dd6fdaed72ab46691f9
1 file changed