Don't allow HUNs during dozing fullscreen intents

Move check preventing HUN from canAlertCommonWake to canAlertCommon so
that we dont HUN while a fullscreen intent is active.

Bug: 153705384
Test: repro in bug does not cause HUN
Change-Id: I3e520621027d53da44556e925f21756bea8eac5b
1 file changed