chore: update test case comment to follow repository conventions (Chinese)

Co-authored-by: liweijie0812 <10710889+liweijie0812@users.noreply.github.com>

Author: Copilot

packages/components/dropdown/__tests__/dropdown-menu.test.tsx

@@ -181,7 +181,7 @@ describe('DropdownMenu', () => {
     });
 
     it('renders empty menu when no options', () => {
-      // With the fix, DropdownMenu should not crash when there are no options
+      // 修复后，DropdownMenu 在没有选项时不会崩溃
       const wrapper = mount(DropdownMenu, {
         props: {
           options: [],