fix: roles api not fetch

src/store/role.js

@@ -2,8 +2,8 @@ import {makeAutoObservable} from "mobx";
 import {http} from "../utils/http";
 
 export class Role {
-  page = null;
-  pageSize = null;
+  page = 0;
+  pageSize = 10;
   data = [];
   total_data = 0;