fix: modal bg color (#12042)

web/app/components/base/modal/index.tsx

@@ -39,7 +39,7 @@ export default function Modal({
           leaveFrom="opacity-100"
           leaveTo="opacity-0"
         >
-          <div className="fixed inset-0 bg-background-overlay-fullscreen" />
+          <div className="fixed inset-0 bg-background-overlay" />
         </Transition.Child>
 
         <div