update RolePermissionAssign style

src/pages/user/UserRoleAssign.vue

@@ -54,6 +54,7 @@ import ManagedUserAPI from "@/api/ManagedUserAPI";
 import { useCurrentStoreStore } from "@/store/currentStoreStore";
 import type { Role } from "@/store/permissionSettingsStore";
 import type { ManagedUser } from "@/types/ManagedUser";
+import { getErrorMessage } from "@/utils/error";
 import { corePermissionCodes, gaoRoleCodes } from "@/utils/permission";
 
 defineOptions({
@@ -270,16 +271,6 @@ function getRoleId(role: UserRole | string): string {
 	return fullRole?.id || "";
 }
 
-function getErrorMessage(error: unknown, fallback: string): string {
-	if (error instanceof Error && error.message) {
-		return error.message;
-	}
-	if (typeof error === "string" && error) {
-		return error;
-	}
-	return fallback;
-}
-
 function setRoleChecked(roleId: string, value: boolean): void {
 	if (value && !checkedRoleIds.value.includes(roleId)) {
 		checkedRoleIds.value.push(roleId);