fix AppSwitch#isNotificationSuppressed

When package state is null, no flags are set including the flag that
suppresses notifications. This method should return false in such cases.

core/java/android/ext/settings/app/AppSwitch.java

@@ -164,7 +164,7 @@ public final boolean isNotificationSuppressed(@Nullable GosPackageStateBase ps)
         if (flag == 0) {
             return false;
         }
-        return ps == null || ps.hasFlags(flag);
+        return ps != null && ps.hasFlags(flag);
     }
 
     public final void addSuppressNotificationFlag(GosPackageState.Editor ed) {