test(adminfront): update tests to match recent UI changes

- Remove checks for deleted 'Action' column buttons in tenant list.
- Update user list test to expect 'ROLE' column.
- Update user creation test to expect role field and payload.

adminfront/tests/tenant_seed_protection.spec.ts

@@ -99,11 +99,9 @@ test.describe("Seed tenant protection", () => {
     const seedRow = page.getByRole("row", { name: /한맥가족/ });
     await expect(seedRow.getByRole("checkbox")).toHaveCount(0);
     await expect(seedRow.getByText("초기 설정")).toBeVisible();
-    await expect(seedRow.getByRole("button", { name: /삭제/ })).toBeDisabled();
 
     const normalRow = page.getByRole("row", { name: /일반 테넌트/ });
     await expect(normalRow.getByRole("checkbox")).toBeEnabled();
-    await expect(normalRow.getByRole("button", { name: /삭제/ })).toBeEnabled();
   });
 
   test("disables delete action on seed tenant profile", async ({ page }) => {