Apply hero logo fetchpriority/eager/async to the mobile variant too

The previous perf commit only updated the desktop logo <img>
(.cs-hero-image-large, visible at ≥1024px). The mobile sibling
(.cs-hero-image-inner, the LCP candidate on phones) was missed
because its indent differs, so phones were rendering the plain
<img src alt> with default priority/decoding.

Both <img>s point at the same URL, so this doesn't add a network
request — it just ensures the priority/decoding hints apply
regardless of which variant the viewport activates.

Author: rusikv

src/components/CaseStudy/CaseStudyDetailHero.astro

@@ -18,7 +18,7 @@ const { category, heading, paragraphs, logo, logoAlt, backgroundImage } = Astro.
 			<h1 class="cs-hero-heading">{heading}</h1>
 			<div class="cs-hero-image-inner" style={`background-image: url('${backgroundImage}')`}>
 				<div class="cs-hero-logo-wrap">
-					<img src={logo} alt={logoAlt} />
+					<img src={logo} alt={logoAlt} fetchpriority="high" loading="eager" decoding="async" />
 				</div>
 			</div>
 			{paragraphs.map((p) => <p class="cs-hero-paragraph" set:html={p} />)}