[Bug] page-agent always takes action when required to check the checkbox state before deciding whether to act

What happened? / 问题描述

[Precondition] The checkbox at https://element.eleme.cn/#/zh-CN/component/checkbox is already checked.

[Action] Enter the prompt: There is only one checkbox on the current page, named “备选项” (Option). Check its checked status. If it is already checked, do nothing; if it is unchecked, check it.

[Expected] The check result is checked; no action is performed.

[Actual] The check result is checked; clicking the checkbox causes it to be unchecked.

【前置条件】https://element.eleme.cn/#/zh-CN/component/checkbox 复选框已勾选 【操作】输入提示词：当前页面只有一个复选框叫“备选项”，检查其勾选状态。如果已勾选，则不做任何操作，未勾选则勾选 【预期】检查结果为已勾选，不做任何操作 【实际】检查结果为已勾选，点击复选框导致勾选状态被取消

How to reproduce / 如何复现

https://element.eleme.cn/#/zh-CN/component/checkbox

Version

1.12.4

Browser

152.0.7977.83

Before submitting

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