Test: Notebook rendering

[rebornix]

Refs: #90382

• anyOS @sbatten

Complexity: 3

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We made good progress on notebook experience in VS Code this iteration. Even though we are still in early stages, we'd like to ensure that the work is solid and we are confident whenever we do a demo to others.

Please follow the manual smoke test wiki https://github.com/microsoft/vscode/wiki/Notebook-Smoke-Test to give it a test. Please note the UX is not polished but the functionalities mentioned in the wiki should be there. However, feel free to file bug reports, feature requests, UI/UX recommendations, etc.

[rebornix]

Assigned to @sbatten as he participated in the notebook discussions with us very often so he will feel comfortable with setting up custom builds for the notebook work.