Size header logos by height instead of width

[amjadr360]

Issue: https://github.com/extendify/company-product/issues/2393

The site-logo block's width attribute makes WP core recompute the
image's intrinsic size from that width (site-logo.php:18-24), so a
landscape logo at width:40 renders 40px wide and ~10px tall. Setting
width also drops the is-default-size class, which is the only
selector the theme's existing logo clamp targets — the
max-height: 42px; width: auto rule in style.css:403. These three
headers were opting themselves out of the one rule that already
handles both square and landscape logos.

Removing the attribute puts them back on that clamp. It also makes
them agree with the Extendify API redesign preview, which renders the
logo under the same 42px max-height — the mismatch reported in
company-product#2393, where the preview showed a legible wordmark and
the built site showed a sliver.

Catalina Skyline goes from 48px to the shared 42px; Atlas Beacon and
Ceadar Peak from 40px.