Fixing Search (CTRL+F) Doesn't Auto-Update After Content Changes Dyna…

[Jatin24062005]

…mically

This PR fixes an issue where the search match counter does not update dynamically when content is modified. It also ensures that the counter resets correctly when switching between files in the CodeMirror editor.

Fixes #issue-#3367

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

Issue Addressed:
Search results do not auto-update when new content is added.
Search match counter does not reset when switching between files.
Includes improvements from another pending PR #3362 that fixes a similar issues-#3361 & #2125

• 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]

Since this PR is virtually similar to the one that's linked (besides the additional lines on 526-533), I think we should work with and support the one that's been opened first. Please feel free to open a discussion and provide your thoughts on the changes you've added within #3362.

[Jatin24062005]

@raclim Sure! Also, I’ve created an issue related to this. It would be great to consider that alongside the discussion in #3362. This way, we can ensure all necessary changes are addressed in a single place.