Vaadin 25: FooterToolbar displays empty row above the actual Toolbar

[dkdxc]

Describe the bug

When using the FooterToolbar, it's always showing an empty row in the grid above the toolbar. This is also visible in the Demo Application.
It's probably related to the implementation in FooterToolbarGridHelper.

Expected behavior

The Footer Toolbar shouldn't display an empty row.

Minimal reproducible example

GridHelper.addToolbarFooter(grid, footerToolbar);

Add-on Version

2.0.0

Vaadin Version

25.0.4

Additional information

No response