0.4.2 MystRenderer renders default values incorrectly

[johanseland]

I am using sphinx2-autodoc2 to generate documentation for a Python class like this:

class Foo:
"""This is class foo"""

  bar = 42
  """The bar of foo"""

When running this through Sphinx-autodoc2 it creates Foo.md with the following relevant parts:

````{py:attribute} bar
:canonical: Foo.bar
:value: >
   1

```{autodoc2-docstring} Foo.bar
```
````

Notice the ">" and extra linebreak!

This renders rather ugly:

What is wanted is more akin to:

This is caused by the following from myst_.py:

sphinx-autodoc2/src/autodoc2/render/myst_.py

Lines 348 to 362 in 13933a5

	if isinstance(value, str):
	if len(value.splitlines()) == 1:
	if len(value) > 100:
	value = value[:100] + "..."
	yield ":value: >" # use > to ensure its understood as a string
	yield f" {value!r}"
	else:
	yield ":value: <Multiline-String>"
	# TODO in sphinx-autoapi, they made a code block inside a details/summary HTML
	else:
	value = str(value).replace("\n", " ")
	if len(value) > 100:
	value = value[:100] + "..."
	yield ":value: >"
	yield f" {value}"

I'm not sure what the intent of the comment: # use > to ensure its understood as a string is supposed to mean.

The rst-renderer is not up to such shenigans:

sphinx-autodoc2/src/autodoc2/render/rst_.py

Lines 314 to 326 in 13933a5

	if isinstance(value, str):
	if len(value.splitlines()) == 1:
	if len(value) > 100:
	value = value[:100] + "..."
	yield f" :value: {value!r}"
	else:
	yield " :value: <Multiline-String>"
	# TODO in sphinx-autoapi, they made a code block inside a details/summary HTML
	else:
	value = str(value).replace("\n", " ")
	if len(value) > 100:
	value = value[:100] + "..."
	yield f" :value: {value}"

I can make a PR with a proposed fix, are you still accepting those?