[Bug] Updating article with API removes table styling

Summary

When an article is created or updated through the REST API / MCP then the `style` attribute on table <td> tags are removed, undoing styling that was applied in the web editor to customize colors or widths.

Steps to Reproduce

1. Use the Knowledge web editor to create an article with a table, assign colors the to the column headers and adjust the column widths.
2. Use the REST API / MCP to retrieve the article HTML, note that the retrieved article’s body contains the `style` attribute defining background-color and width on the <td> tags.
3. Use the REST API / MCP to re-save the article as-is.
4. In the web editor refresh the article and note that the table styling was removed.
5. Use the REST API / MCP to retrieve the article HTML, note that the retrieved article’s body no longer contains the `style` attribute on the <td> tags.

Expected Result

The `style` attribute on the <td> tags defining the background-color and column width is preserved.

Actual Result

The `style` attribute on the <td> tags is removed.

Example Step 1

Example Step 2

<div class="intercom-interblocks-table-container">
  <table role="presentation">
    <tbody>
    <tr>
      <td style="background-color: #d7efdc; width: 320px;">
        <p class="no-margin">Header 1</p>
      </td>
      <td>
        <p class="no-margin">Header 2</p>
      </td>
    </tr>
    <tr>
      <td style="background-color: #e8e8e8; width: 320px;">
        <p class="no-margin">Lorem ipsum dolor sit amet</p>
      </td>
      <td>
        <p class="no-margin">Sed ut perspiciatis unde omnis iste natus error</p>
      </td>
    </tr>
    <tr>
      <td style="width: 320px;">
        <p class="no-margin">Ut enim ad minima veniam</p>
      </td>
      <td>
        <p class="no-margin">Consectetur adipiscing elit</p>
      </td>
    </tr>
    </tbody>
  </table>
</div>

Example Step 4

Example Step 5

<div class="intercom-interblocks-table-container">
  <table role="presentation">
    <tbody>
    <tr>
      <td>
        <p class="no-margin">Header 1</p>
      </td>
      <td>
        <p class="no-margin">Header 2</p>
      </td>
    </tr>
    <tr>
      <td>
        <p class="no-margin">Lorem ipsum dolor sit amet</p>
      </td>
      <td>
        <p class="no-margin">Sed ut perspiciatis unde omnis iste natus error</p>
      </td>
    </tr>
    <tr>
      <td>
        <p class="no-margin">Ut enim ad minima veniam</p>
      </td>
      <td>
        <p class="no-margin">Consectetur adipiscing elit</p>
      </td>
    </tr>
    </tbody>
  </table>
</div>