[card] Unexpected extra space in the footer with horizontal theme

[web-padawan]

Description

Originally reported at #8233 (review) and #8233 (comment)

In two cases there's extra space in the footer:

• Card with theme="horizontal" and text content
• Card with theme="horizontal cover-media" and text content + image

See also #8233 (comment) for some clarification.

Expected outcome

Expected no extra space.

Minimal reproducible example

Can be reproduced in the dev page dev/card.html.

Steps to reproduce

Using the card playground in dev page:

1. Set "content" select to "text"
2. Enable "horizontal" checkbox
3. Set "media" select to "image"
4. Enable "cover media" checkbox

Environment

Vaadin version(s): 24.7

Browsers

Issue is not browser related