Merge "feat(brightness suw): add brightness preferences in suw" into main

aconfig/accessibility/accessibility_flags.aconfig

@@ -3,6 +3,13 @@ container: "system_ext"
 
 # NOTE: Keep alphabetized to help limit merge conflicts from multiple simultaneous editors.
 
+flag {
+  name: "add_brightness_settings_in_suw"
+  namespace: "accessibility"
+  description: "Whether to add brightness preference in SUW Vision Settings"
+  bug: "332974327"
+}
+
 flag {
   name: "edit_shortcuts_in_full_screen"
   namespace: "accessibility"