code-tools + echo does not behave consistently on ipynb/qmd

[mcanouil]

There is a weird unexpected interaction which changes depending on how the options are called on a Jupyter Notebook.

Assuming:

---
title: "Reproducible Quarto Document"
engine: jupyter
---

```{python}
print("Hello, world!")
```

```python
print("Goodbye, world!")
```

Converting it as a Jupyter Notebook via:

quarto convert index.qmd 

QMD	IPYNB
Correct: quarto render index.qmd --to html -M code-tools:true	Incorrect: quarto render index.ipynb --to html -M code-tools:true
Correct: quarto render index.qmd --to html -M code-tools:true -M echo:false	Incorrect: quarto render index.ipynb --to html -M code-tools:true -M echo:false
Correct: quarto render index.qmd --to html -M code-tools:true -M code-fold:true	Correct: quarto render index.ipynb --to html -M code-tools:true -M code-fold:true
Correct: quarto render index.qmd --to html -M code-tools:true -M code-fold:true -M echo:false	Incorrect: quarto render index.ipynb --to html -M code-tools:true -M code-fold:true -M echo:false

Originally posted by @mcanouil in #11661 (reply in thread)

[mcanouil]

Additionally, code-tools: true only takes effect in Jupyter notebook with code-fold: true (possibly with other options as well).
code-tools: true does not work on default settings.