Column widths set in a table directive are ignored.

[jhcole]

What version of myst-parser are you using?

2.0.0

What version dependencies are you using?

$ pip list | grep -e phinx -e docu
docutils                      0.19
pydata-sphinx-theme           0.13.0rc4
Sphinx                        6.2.1
sphinx-autodoc2               0.4.2
sphinx-book-theme             1.0.0rc2
sphinx-copybutton             0.5.2
sphinx-design2                0.4.0
sphinx_pyscript               0.1.0
sphinx_pytest                 0.1.1
sphinx_tippy                  0.4.1
sphinx-togglebutton           0.3.2
sphinxcontrib-applehelp       1.0.4
sphinxcontrib-devhelp         1.0.2
sphinxcontrib-htmlhelp        2.0.1
sphinxcontrib-jsmath          1.0.1
sphinxcontrib-qthelp          1.0.3
sphinxcontrib-serializinghtml 1.1.5
sphinxext-opengraph           0.8.2
sphinxext-rediraffe           0.2.7

What operating system are you using?

Linux

Describe the Bug

Given this example markdown file which specified column widths, the column width information is discarded.

# example.md
```{table} *title*
:name: name
:widths: 1 2

| a | b |
|---|---|
| 1 | 2 |
```

$ myst-docutils-demo example.md 
<table id="name">
<caption><em>title</em></caption>
<thead>
<tr><th class="head"><p>a</p></th>
<th class="head"><p>b</p></th>
</tr>
</thead>
<tbody>
<tr><td><p>1</p></td>
<td><p>2</p></td>
</tr>
</tbody>
</table>

Expected Behavior

I expected the width information to be kept. For example:

$ myst-docutils-demo example.md 
<table id="name">
<caption><em>title</em></caption>
<colgroup>
<col style="width: 33.3%" />
<col style="width: 66.7%" />
</colgroup>
<thead>
<tr><th class="head"><p>a</p></th>
<th class="head"><p>b</p></th>
</tr>
</thead>
<tbody>
<tr><td><p>1</p></td>
<td><p>2</p></td>
</tr>
</tbody>
</table>

I'm currently working on a pull request which produces the expected behavior.

To Reproduce

Create this example file.

# example.md
```{table} *title*
:name: name
:widths: 1 2

| a | b |
|---|---|
| 1 | 2 |
```

Then run it like this

$ myst-docutils-demo example.md