Disallow attention check when power save mode is enabled

Test: locally by enabling power save mode and screen attention then checking attention is disabled

Bug: 186690152
Change-Id: Ib56ca385461857040042c9f041c1b3da69b6f347

services/core/java/com/android/server/attention/AttentionManagerService.java

@@ -257,8 +257,8 @@ public class AttentionManagerService extends SystemService {
             return false;
         }
 
-        // don't allow attention check in screen off state
-        if (!mPowerManager.isInteractive()) {
+        // don't allow attention check in screen off state or power save mode
+        if (!mPowerManager.isInteractive() || mPowerManager.isPowerSaveMode()) {
             return false;
         }