Avoid falsing rejections on PIN compose bouncer

Fixes: 361793132
Test: 1. Restart device or run adb shell setprop ctl.restart zygote
 2. Enable compose bouncer, set auth method as PIN
 3. Swipe up to bouncer
 4. Repeatedly tap any PIN button
 5. Bouncer should not get dimissed
Flag: com.android.systemui.compose_bouncer
Change-Id: I18678b36db3e0848b51836aebcb51f7350e85b02