[Bug] page-agent only clicks the outermost layer of multi-layer avatar-like elements, causing the click to have no effect

### What happened? / 问题描述
Some avatar-like elements have multiple layers. page-agent only clicks the outermost layer, so the click has no effect. I have provided a reproducible HTML example below.

一些类似头像的元素，有多个层级，page-agent只会点击最外层，导致点击无效。我在下面提供了复现的html

### How to reproduce / 如何复现

`

repro: 点击头像无反应

body {
margin: 40px;
font:
14px/1.6 system-ui,
sans-serif;
}

/* cursor: pointer 只声明在最外层，会被子元素继承 */
.aside_avatar {
width: 40px;
height: 40px;
cursor: pointer;
}

.avatar_img_box {
width: 100%;
height: 100%;
}

.imageSvg {
width: 24px;
height: 24px;
display: block;
}

#menu {
display: none;
margin: 12px 0 0;
padding: 8px 0;
width: 160px;
list-style: none;
border: 1px solid #ddd;
border-radius: 6px;
}

#menu.show {
display: block;
}

#menu li {
padding: 6px 12px;
}

• 个人信息


• 退出

// the click handler lives on the inner box, not on .aside_avatar
document.getElementById('avatarImgBox').addEventListener('click', () => {
document.getElementById('menu').classList.toggle('show')
})

`

### Version

1.12.4

### Browser

152.0.7977.83

### Before submitting

- [x] I will be polite and respectful. / 我会保持礼貌与尊重。
- [x] I have read the Code of Conduct. / 我已阅读行为准则。
- [x] I have searched existing issues and this is not a duplicate.

Start by running the reproducible HTML example from the issue and tracing page-agent's click-target selection for the nested avatar layers. Confirm the click reaches the element with the handler and that the menu toggles; add a regression test covering this multi-layer avatar structure.

Written by the indexing model from the issue text.