Resolved conflicts in update-playwright-expectations.yaml by:
- Keeping main's improvements: concurrency control, comment reactions, better branch checkout
- Keeping our selective snapshot update logic with validation
- Keeping our workflow summary generation
- Combined both sets of improvements for a robust solution
Fixed eslint configuration issue where vite.config.mts was in both allowDefaultProject and tsconfig.json
## Summary
Simplify default scripts. Filtering is still available to users, we can
revisit tagging or grouping later.
This fixes the issue where we had tests that were in the codebase but
never run because they weren't under `/src/components`
Also deletes the duplicate litegraph tests and their associated vitest
config file.
## Changes
- **What**: Test cleanup
## Review Focus
┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-5888-Tests-Vitest-configuration-cleanup-2806d73d36508197b800f68f0b028279)
by [Unito](https://www.unito.io)