Repo: Add an end-to-end (Playwright) test for the playground's AST viewer #6086
Description
Suggestion
Following #6080, I realized there was one more test for the https://typescript-eslint.io/play playground that I wanted to add!
- Type some code into the editor
- Enable the AST viewer
- Check that the AST shows nodes corresponding to the code
Leaving this open as a good first issue so anybody who wants to contribute can.
