feat: word-wrap editor

[cristianoventura]

Description

This PR enables word-wrap for the Monaco editor in Script Preview and the Content tab of a response. The state for both are persisted individually in the settings file.

How to Test

• open Script Preview and toggle the word-wrap switch
• open the response content of a JSON request and toggle word-wrap
• re-open the app and check that the previous state was persisted

Checklist

• [x] I have performed a self-review of my code.
• [] I have added tests for my changes.
• [x] I have run linter locally (npm run lint) and all checks pass.
• [x] I have run tests locally (npm test) and all tests pass.
• [ ] I have commented on my code, particularly in hard-to-understand areas.

Screenshots (if appropriate):

https://github.com/user-attachments/assets/3b93ffa2-ed78-458d-9ae9-108ab4c01f58

Related PR(s)/Issue(s)

Resolves https://github.com/grafana/k6-studio/issues/237

[cristianoventura]

I've moved the word wrap switch to an IconButton aligned at the end of the toolbar.

@e-fisher I noticed that this only happens for JSON >= than 10000 characters. It could be related to internal performance and how Monaco handles it. I'm still trying to figure out how to solve this issue.