Keyguard: We need to ensure that keyguard is showing as well to set the token

Google fix

https://github.com/SlimRoms/frameworks_base/commit/021806ec33f5f59567f3bb3af135b2a1d88c0951

fixes what it is meant to fix.

But still we need to ensure if the keyguard eg is disabled by 3rd party
apps or the keyguard is not showing due of other reasons to inform PhoneWindowManager over the token
not to wait to draw for the Keyguard and go ahead.

Fix:
Just check for isShowing in addition to the check if KeyGuard is disabled

Change-Id: I5f017a6ccebf12dc717fb6d44802a1c1fee15abc
Fix fc in NavRing Target Settings
When greenify or tasker is installed and their accessibility-service active, Navring Target Settings failed because of an out of Index Exception, this commit fixes this