Fix XPath string escaping in YAML scripts when not using Bridge Mode (#1262)

* Initial plan

* Initial exploration and understanding of the issue

Co-authored-by: quanru <[email protected]>

* Fix XPath error handling in YAML scripts when not using Bridge Mode

Co-authored-by: quanru <[email protected]>

* Fix XPath string escaping in JavaScript evaluation calls

Co-authored-by: quanru <[email protected]>

* refactor(tests): improve formatting and readability of XPath string escaping tests

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Co-authored-by: copilot-swe-agent[bot] <[email protected]>
Co-authored-by: quanru <[email protected]>
Co-authored-by: quanruzhuoxiu <[email protected]>

Author: Copilot