Fix the label of the Modes activity in Settings

It was "Do Not Disturb" when it should be "Modes". This means that newly-created widget shortcuts will have the correct text; a follow-up CL will fix existing ones (which also point to the wrong activity).

Bug: 365545604
Test: manual
Flag: android.app.modes_ui
Change-Id: I34e5b09adafc0cb2a48985f4a3f9f9a7cc92491d
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index d988fea..93a185e 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -1292,7 +1292,7 @@
 
         <activity
             android:name="Settings$ModesSettingsActivity"
-            android:label="@string/zen_mode_settings_title"
+            android:label="@string/zen_modes_list_title"
             android:icon="@drawable/ic_homepage_notification"
             android:exported="true">
             <intent-filter android:priority="1"