Base: ActiveDisplay check for Immersive Mode Enable

As we know, Immersive Mode will force StatusBar and NavigationBar to Hide
while ActivieDisplay always setSystemUiVisibility flags for Both if enabled,
and will cause a conflict for that flags
// how to reproduce bug:
// set ImmersiveMode enable
// set ActiveDisplay enable
// Turn Off screen, swipe to sensor, ActiveDisplay showing
// Turn Off screen again (using Power button)
// Turn On screen (using Power button)
// pull Quicksettings, disable ImmersiveMode from ImmersiveTile
// Turn Off screen again, swipe to sensor, ActiveDisplay showing
// unlock via ActiveDisplay
// voila.... random flags will be set into setSystemUiVisibility
// (sometimes navbar or statusbar or both are gone)
lets make ActiveDisplay check for ImmersiveMode enable/disable,
so ActiveDisplay will not always setSystemUiVisibility flags
if ImmersiveMode enable
also workaround fix for unknown icon (?) sometimes appears
(if Show All Notification enabled)
(based from user report at XDA thread, why they always report there not in JIRA :/)

Change-Id: I1349c377bcb5b2f17ac73382c405905ca303afa6