fix: headerRender props check

package.json

 {
   "name": "@ant-design-vue/pro-layout",
-  "version": "3.1.0",
+  "version": "3.1.1",
   "license": "MIT",
   "files": [
     "dist"

src/BasicLayout.tsx

@@ -296,7 +296,7 @@ const ProLayout = defineComponent({
             headerTitleRender: menuHeaderRender,
             menuContentRender: menuContentRender,
             headerContentRender,
-            headerRender: customHeaderRender,
+            headerRender: props.headerRender !== false ? customHeaderRender : false,
             theme: (props.navTheme || 'dark')
               .toLocaleLowerCase()
               .includes('dark')