fix: enable node-click highlighting in YAML editor mode

[sakshammjn]

Summary

This PR fixes a bug where clicking a node in the graph visualization failed to highlight the corresponding lines in the Monaco editor when the editor format was set to YAML. The existing implementation used jsonc-parser (which only supports JSON) to resolve node paths to editor positions. This worked for JSON but failed for YAML, as parseTree returned undefined and the effect bailed out early.

Changes:

1. Added the yaml package for position-aware YAML AST parsing
2. Refactored the highlight useEffect in MonacoEditor.tsx to branch on schemaFormat: using jsonc-parser for JSON (unchanged) and yaml's parseDocument for YAML
3. Added a 50ms micro-delay to handle the race condition when toggling formats.
4. Added schemaFormat to the useEffect dependency array to re-trigger highlights on format switch

What kind of change does this PR introduce

Bug fix

Issue Number

Closes #167

Video

Screen.Recording.2026-03-10.at.10.51.11.PM.mov

Does this PR introduce a breaking change?

No

If relevant, did you update the documentation?

No