fixing Search Auto-Update After Content Changes Dynamically

[Jatin24062005]

This PR fixes an issue where the search match counter does not update dynamically when content is modified.

Fixes #3405

Changes:
Add a change event listener to detect content modifications and restart the search

p5.js.Web.Editor.-.Google.Chrome.2025-03-06.17-32-56.mp4

• has no linting errors (npm run lint)
• has no test errors (npm run test)
• is from a uniquely-named feature branch and is up to date with the develop branch.
• is descriptively named and links to an issue number, i.e. Fixes #123

[raclim]

Closing due to reasons outlined in the attached issue.