fix: open visit request list from nav

frontend/src/components/Layout.tsx

@@ -29,7 +29,7 @@ export const Layout: React.FC<{ children: React.ReactNode }> = ({ children }) =>
           IT센터 출입자관리
         </Link>
         <nav className="nav">
-          <NavLink to="/visit-requests/new">출입신청</NavLink>
+          <NavLink to="/visit-requests">출입신청</NavLink>
           {hasRole('ADMIN') && <NavLink to="/approvals">승인대기</NavLink>}
           {hasRole('HOST', 'SECURITY', 'ADMIN') && <NavLink to="/access">출입콘솔</NavLink>}
           {hasRole('SECURITY', 'ADMIN') && <NavLink to="/reports">보고서</NavLink>}