Add SCHEDULE_EXACT_ALARM to Settings app

SCHEDULE_EXACT_ALARM already be used in the Settings's PeriodicJobManager, it's better to explicit declare the usage.

Bug: 329046490
Change-Id: I87412f6b7d2da0451184ee635019402a4cd0760b
Test: presubmit
diff --git a/data/etc/com.android.settings.xml b/data/etc/com.android.settings.xml
index fbe1b8e..6bdd291 100644
--- a/data/etc/com.android.settings.xml
+++ b/data/etc/com.android.settings.xml
@@ -49,6 +49,7 @@
         <permission name="android.permission.READ_SEARCH_INDEXABLES"/>
         <permission name="android.permission.REBOOT"/>
         <permission name="android.permission.RECOVERY"/>
+        <permission name="android.permission.SCHEDULE_EXACT_ALARM"/>
         <permission name="android.permission.STATUS_BAR"/>
         <permission name="android.permission.SUGGEST_MANUAL_TIME_AND_ZONE"/>
         <permission name="android.permission.TETHER_PRIVILEGED"/>