Notebook errors silently

There is a `nb_execution_raise_on_error` keyword for tuning [MyST-NB](https://github.com/executablebooks/MyST-NB), but I don't know where to put it...

Right now I'm debugging this locally via:
```bash
poetry run sphinx-build -M html docs docs/_build
```
See https://www.sphinx-doc.org/en/master/usage/quickstart.html.
In CI it is replaced with `poetry run make ...`.

Start with the documentation build configuration under docs/ and the `poetry run sphinx-build -M html docs docs/_build` command, then locate how MyST-NB is configured. Set the `nb_execution_raise_on_error` option so notebook execution failures are reported, and verify the behavior with the documented Sphinx build command.

Written by the indexing model from the issue text.