Make PendingIntent mutable in UiModeManger

Fixes: b/173744200
Test: UiModeManagerTest
Change-Id: I30a7e7d33fa432ca6352a80e41c4641ed6c6c1dc
diff --git a/services/core/java/com/android/server/UiModeManagerService.java b/services/core/java/com/android/server/UiModeManagerService.java
index 915517a..d8af01e 100644
--- a/services/core/java/com/android/server/UiModeManagerService.java
+++ b/services/core/java/com/android/server/UiModeManagerService.java
@@ -1779,7 +1779,7 @@
                                 // TODO(b/173744200) Please replace FLAG_MUTABLE_UNAUDITED below
                                 // with either FLAG_IMMUTABLE (recommended) or FLAG_MUTABLE.
                                 PendingIntent.getActivityAsUser(context, 0,
-                                        carModeOffIntent, PendingIntent.FLAG_MUTABLE_UNAUDITED,
+                                        carModeOffIntent, PendingIntent.FLAG_MUTABLE,
                                         null, UserHandle.CURRENT));
                 mNotificationManager.notifyAsUser(null,
                         SystemMessage.NOTE_CAR_MODE_DISABLE, n.build(), UserHandle.ALL);