fix：【MP 公众号】上传资源时，无法刷新令牌的问题

src/views/mp/material/components/upload.ts

 import type { UploadProps, UploadRawFile } from 'element-plus'
-import { getAccessToken } from '@/utils/auth'
+import { getRefreshToken } from '@/utils/auth'
 import { UploadType, useBeforeUpload } from '@/views/mp/hooks/useUpload'
 
-const HEADERS = { Authorization: 'Bearer ' + getAccessToken() } // 请求头
+const HEADERS = { Authorization: 'Bearer ' + getRefreshToken() } // 请求头（解决 el-upload 上传过程中，无法刷新令牌的问题）
 const UPLOAD_URL = import.meta.env.VITE_BASE_URL + '/admin-api/mp/material/upload-permanent' // 上传地址
 
 interface UploadData {