fix: update example import method

Author: anlyyao

src/side-bar/_example/base.tsx

@@ -1,6 +1,6 @@
 import React, { useState, useEffect, useRef, useCallback } from 'react';
-import { Grid, GridItem } from '../../grid';
-import { SideBarProps, SideBarItemProps, SideBar, SideBarItem } from '..';
+import { Grid, GridItem, SideBar, SideBarItem } from 'tdesign-mobile-react';
+import type { SideBarProps, SideBarItemProps } from 'tdesign-mobile-react';
 import './style/base.less';
 
 const image = 'https://tdesign.gtimg.com/mobile/demos/example2.png';

src/side-bar/_example/custom.tsx

@@ -1,6 +1,7 @@
 import React, { useState, useEffect, useRef, useCallback } from 'react';
-import { Grid, GridItem } from '../../grid';
-import { SideBarProps, SideBarItemProps, SideBar, SideBarItem } from '..';
+import type { SideBarProps, SideBarItemProps } from 'tdesign-mobile-react';
+import { SideBar, SideBarItem, Grid, GridItem } from 'tdesign-mobile-react';
+
 import './style/custom.less';
 
 const image = 'https://tdesign.gtimg.com/mobile/demos/example2.png';

src/side-bar/_example/switch.tsx

@@ -1,6 +1,7 @@
 import React, { useState, useRef } from 'react';
-import { Cell, Image } from 'tdesign-mobile-react';
-import { SideBarProps, SideBarItemProps, SideBar, SideBarItem } from '..';
+import type { SideBarProps, SideBarItemProps } from 'tdesign-mobile-react';
+import { SideBar, SideBarItem, Cell, Image } from 'tdesign-mobile-react';
+
 import './style/switch.less';
 
 const image = 'https://tdesign.gtimg.com/mobile/demos/example2.png';

src/side-bar/_example/with-icon.tsx

@@ -1,7 +1,8 @@
 import React, { useState, useEffect, useRef, useCallback } from 'react';
 import { Icon } from 'tdesign-icons-react';
-import { Grid, GridItem } from '../../grid';
-import { SideBarProps, SideBarItemProps, SideBar, SideBarItem } from '..';
+import type { SideBarProps, SideBarItemProps } from 'tdesign-mobile-react';
+import { SideBar, SideBarItem, Grid, GridItem } from 'tdesign-mobile-react';
+
 import './style/base.less';
 
 const image = 'https://tdesign.gtimg.com/mobile/demos/example2.png';