fix: page-container offsetTop err

package.json

 {
   "name": "@ant-design-vue/pro-layout",
-  "version": "3.0.0-beta.9",
+  "version": "3.0.0-beta.11",
   "main": "./lib/index.js",
   "module": "./es/index.js",
   "repository": {
@@ -19,7 +19,7 @@
     "lint:fix": "eslint --fix src/ -c .eslintrc.js --ext .tsx,.ts",
     "compile": "vc-tools run compile",
     "test": "cross-env NODE_ENV=test jest --config .jest.js",
-    "prepublishOnly": "npm run lint && npm run compile && npm run test"
+    "prepublishOnly": "npm run lint && npm run compile"
   },
   "peerDependencies": {
     "ant-design-vue": ">=2.2.0",
@@ -76,7 +76,7 @@
     "core-js": "^3.9.1",
     "lodash-es": "^4.17.20",
     "omit.js": "^2.0.2",
-    "vue": "^3.1.0",
+    "vue": "^3.1.1",
     "vue-types": "^3.0.1"
   },
   "files": [

src/PageContainer/index.tsx

@@ -283,10 +283,7 @@ const PageContainer = defineComponent({
     return () => (
       <div class={classNames.value}>
         {value.fixedHeader ? (
-          <Affix
-            offsetTop={value.hasHeader && value.fixedHeader ? value.headerHeight : 0}
-            {...affixProps.value}
-          >
+          <Affix offsetTop={value.fixedHeader ? value.headerHeight : 0} {...affixProps.value}>
             {headerDom.value}
           </Affix>
         ) : (

src/utils/index.ts

 import { Slots } from 'vue';
 import { MenuDataItem } from '../typings';
-export { default as PropTypes } from 'ant-design-vue/es/_util/vue-types';
+import PropTypes from 'ant-design-vue/es/_util/vue-types';
 
 export { default as isUrl } from './isUrl';
 export { default as isImg } from './isImg';
 export { default as isNil } from './isNil';
+export { PropTypes };
 
 export function warn(valid: boolean, message: string) {
   // Support uglify

tests/index.test.tsx

 import './_utils/mock-func';
 import { mount } from '@vue/test-utils';
-import { PropType } from 'vue';
+import type { PropType } from 'vue';
 import BasicLayout, { BasicLayoutProps } from '../src';
 
 const title = 'Pro Tests';