Closes#39152
This PR fixes an issue where we would render Markdown tables full width
based on their container size. We now render tables based on their
content min size, meaning you are still allowed to make the table render
as it was before by making the columns `w_full`.
I had to change the `div()` to `v_flex().items_start()` because this
introduced a weird displaying behavior of the outside table border,
because the grid container was not shrinking due to It was always taking
up the full width of their container.
**Before**
<img width="1273" height="800" alt="Screenshot 2025-11-26 at 14 37 19"
src="https://github.com/user-attachments/assets/2e152021-8679-48c2-b7bd-1c02768c0253"
/>
**After**
<img width="1273" height="797" alt="Screenshot 2025-11-26 at 14 56 12"
src="https://github.com/user-attachments/assets/4459d20e-8c3b-487b-a215-c95ee5c1fc8e"
/>
**Code example**
```markdown
| Name | Age | Occupation |
|:--------:|:-------:|:--------------:|
| Alice | 28 | Engineer |
| Bob | 34 | Designer |
| Carol | 25 | Developer |
| Syntax | Description |
| ----------- | ----------- |
| Header | Title |
| Paragraph | Text |
| City | Population (approx.) | Known For |
|----------------|----------------------|------------------------------------|
| New York | 8,500,000 | Statue of Liberty, Wall Street |
| Los Angeles | 4,000,000 | Hollywood, film industry |
| Chicago | 2,700,000 | Architecture, deep-dish pizza |
| Houston | 2,300,000 | NASA, energy industry |
| Miami | 470,000 | Beaches, Latin culture |
| San Francisco | 800,000 | Golden Gate Bridge, Silicon Valley |
| Las Vegas | 650,000 | Casinos, nightlife |
<table>
<caption>Table Caption</caption>
<thead>
<tr>
<th>ID asjkfjaslkf jalksjflksajflka jlksdla k</th>
<th>Name</th>
</tr>
</thead>
<tbody>
<tr>
<td>1</td>
<td>Chris</td>
</tr>
<tr>
<td>2</td>
<td>Dennis</td>
</tr>
<tr>
<td>3</td>
<td>Sarah</td>
</tr>
<tr>
<td>4</td>
<td>Karen</td>
</tr>
</tbody>
</table>
```
cc @bennetbo
Release Notes:
- Markdown Preview: Markdown tables scale now based on their content
size
7e177c496c