fix: Dropdown show (#6757)

Author: CCherry07

components/tabs/src/TabNavList/OperationNode.tsx

@@ -142,6 +142,7 @@ export default defineComponent({
         onTabClick,
         popupClassName,
       } = props;
+      if (!tabs.length) return null;
       const dropdownPrefix = `${prefixCls}-dropdown`;
 
       const dropdownAriaLabel = locale?.dropdownAriaLabel;

typings/global.d.ts

@@ -266,6 +266,8 @@ declare module 'vue' {
     ABackTop: typeof import('ant-design-vue')['BackTop'];
 
     AWatermark: typeof import('ant-design-vue')['Watermark'];
+
+    AStyleProvider: typeof import('ant-design-vue')['StyleProvider'];
   }
 }
 export {};