Fix 5452698: fix broken logic in reportFailedAttempt() in lockscreen

This fixes a bug where we were no longer showing the countdown dialog
every 5 attempts or "forgot pattern" button when the user has a fallback
password enabled on the pattern unlock screen.

It now correctly shows the dialog whenever the user hits a multiple of
5 bad attempts on any of the pin/pattern/password screens.

Change-Id: I4eb47b4149958a93572d256a4a70f9d67bc1eb38