🐛 fix(vscode): 调用树按钮一直显示，点开时没数到就当场再查

vscode/webview-ui/src/codeReader/CallTreeDialog.test.tsx

@@ -104,10 +104,10 @@ const MANY: CallTree[] = [
 ]
 
 describe('调用树弹框', () => {
-  it('棵数为 0 的函数没有按钮，类有，语句没有；只读的树一排按钮都没有', async () => {
+  it('函数和类都有按钮，棵数为 0 只有图标、大于 0 带数字，语句没有；只读的树一排按钮都没有', async () => {
     const counts = new Map([['function', 0], ['class', 2], ['statement', 4]])
     await render(<BlockLevel blocks={[block('function'), block('class'), block('statement')]} tree={tree({ counts, onOpen: () => {} })} />)
-    expect(container.querySelector('[data-call-tree="function"]')).toBeNull()
+    expect(container.querySelector('[data-call-tree="function"]')!.textContent).toBe('')
     expect(container.querySelector('[data-call-tree="statement"]')).toBeNull()
     expect(container.querySelector('[data-call-tree="class"]')).not.toBeNull()
     expect(container.querySelector('[data-call-tree="class"]')!.textContent).toBe('2')