improve: script ui

[pooja-bruno]

Description

Enhanced the Script UI by implementing a tabbed interface for Pre-request and Post-response scripts. This improvement provides a cleaner and more spacious editing experience compared to the previous vertically stacked layout.

Before:

- Both editors were displayed simultaneously - More scrolling required for longer scripts

After:

- Clean tabbed interface - Better focus on the current script being edited - Improved readability and user experience

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.