Empty ui-grid-cell in Js Dialog

[banobepascal]

Potential mentors:
@eszkadev @Darshan-upadhyay1110

Steps to reproduce

1. Open a Writer/Calc document in Collabora Online.
2. Go to Format and click on Page Style/Format Page
3. A Page style dialog is opened

Obervation:
While rendering the Page Style dialog, an empty <div class='ui-grid-cell'></div> is generated, which introduces unnecessary spacing and causes content misalignment

Expected Behavior

No empty grid cell should be rendered unless it serves a structural purpose. The layout should remain clean and aligned without unintended gaps

Code pointers

online/browser/src/control/jsdialog/Widget.Containers.ts

Line 102 in b9d7d47

L.DomUtil.create('div', 'ui-grid-cell', table);

[banobepascal]

This has been fixed

PR: #12925