[ECM] Declare MANAGE_ENHANCED_CONFIRMATION_STATES permission (Settings)

Declare the MANAGE_ENHANCED_CONFIRMATION_STATES permission in
packages/apps/Settings/AndroidManifest.xml.

Settings needs this permission to interact with
EnhancedConfirmationManager.

(Note that this is strictly a hint. In practice, Settings uses the
system uid has therefore access to the permission regardless of
whether we declare it here.)

Test: presubmit
Bug: 320512579
Change-Id: Id9eda14b6e3b0d4f0f45b6bb039d9ac84260a740

AndroidManifest.xml

@@ -142,6 +142,7 @@
     <uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
     <uses-permission android:name="android.permission.MANAGE_GAME_MODE" />
     <uses-permission android:name="android.permission.RESTART_PHONE_PROCESS" />
+    <uses-permission android:name="android.permission.MANAGE_ENHANCED_CONFIRMATION_STATES" />
 
     <application
             android:name=".SettingsApplication"