improve: error handling for scripts

[pooja-bruno]

Description

Improved Error Handling for Request Scripts

What Changed

• Added error catching and reporting for post-response scripts and test scripts
• Instead of failing the entire request when scripts fail, now captures and reports script errors separately
• Added a new scriptErrors field in the response object to track both post-response error
• Enhanced error formatting and handling in the collections reducer

Contribution Checklist:

• The pull request only addresses one issue or adds one feature.
• The pull request does not introduce any breaking changes
• I have added screenshots or gifs to help explain the change if applicable.
• I have read the contribution guidelines.
• Create an issue and link to the pull request.