공통 테이블 헤더 배경 토큰 적용

adminfront/src/features/user-groups/routes/GlobalUserGroupListPage.tsx

@@ -19,6 +19,7 @@ import {
   TableHeader,
   TableRow,
 } from "../../../components/ui/table";
+import { commonStickyTableHeaderClass } from "../../../../../common/ui/table";
 import {
   type TenantSummary,
   fetchAllTenants,
@@ -87,7 +88,7 @@ function TenantGroupCard({ tenant }: { tenant: TenantSummary }) {
         <div className="flex-1 rounded-md border overflow-hidden flex flex-col">
           <div className="flex-1 overflow-auto relative custom-scrollbar">
             <Table>
-              <TableHeader className="sticky top-0 z-10 bg-secondary shadow-sm">
+              <TableHeader className={commonStickyTableHeaderClass}>
                 <TableRow>
                   <TableHead className="w-[250px]">그룹명</TableHead>
                   <TableHead>설명</TableHead>