refactor: modify all function types in jsx to `React.FC` (#9298)

src/components/Footer/index.tsx

@@ -2,7 +2,7 @@ import { useIntl } from 'umi';
 import { GithubOutlined } from '@ant-design/icons';
 import { DefaultFooter } from '@ant-design/pro-layout';
 
-export default () => {
+const Footer: React.FC = () => {
   const intl = useIntl();
   const defaultMessage = intl.formatMessage({
     id: 'app.copyright.produced',
@@ -37,3 +37,5 @@ export default () => {
     />
   );
 };
+
+export default Footer;

src/components/NoticeIcon/index.tsx

@@ -70,7 +70,7 @@ const getUnreadData = (noticeData: Record<string, API.NoticeIconItem[]>) => {
   return unreadMsg;
 };
 
-const NoticeIconView = () => {
+const NoticeIconView: React.FC = () => {
   const { initialState } = useModel('@@initialState');
   const { currentUser } = initialState || {};
   const [notices, setNotices] = useState<API.NoticeIconItem[]>([]);

src/pages/Admin.tsx

@@ -4,7 +4,7 @@ import { Card, Typography, Alert } from 'antd';
 import { PageHeaderWrapper } from '@ant-design/pro-layout';
 import { useIntl } from 'umi';
 
-export default (): React.ReactNode => {
+const Admin: React.FC = () => {
   const intl = useIntl();
   return (
     <PageHeaderWrapper
@@ -41,3 +41,5 @@ export default (): React.ReactNode => {
     </PageHeaderWrapper>
   );
 };
+
+export default Admin;

src/pages/Welcome.tsx

@@ -12,7 +12,7 @@ const CodePreview: React.FC = ({ children }) => (
   </pre>
 );
 
-export default (): React.ReactNode => {
+const Welcome: React.FC = () => {
   const intl = useIntl();
   return (
     <PageContainer>
@@ -61,3 +61,5 @@ export default (): React.ReactNode => {
     </PageContainer>
   );
 };
+
+export default Welcome;