[Notif] Reset falsing check for blocking helper

Currently, if you long press on the notif in lock screen and then are
interacting with the blocking helper UI (NotificationInfo), the content
automatically closes after 8 seconds even if you've hit stop/undo/etc.

Instead of letting this happen, reset the timeout.

Test: Manually that it doesn't timeout after 8s on LS after update
Bug: 110213459
Change-Id: I0169a7749b718714595bd7239375308f30bf4c43
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/NotificationInfo.java b/packages/SystemUI/src/com/android/systemui/statusbar/NotificationInfo.java
index e52829a..bd40686 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/NotificationInfo.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/NotificationInfo.java
@@ -416,6 +416,12 @@
             }
         });
         mExpandAnimation.start();
+
+        // Since we're swapping/update the content, reset the timeout so the UI can't close
+        // immediately after the update.
+        if (mGutsContainer != null) {
+            mGutsContainer.resetFalsingCheck();
+        }
     }
 
     @Override