Add "eager" loading to images in TabContent and TestimonialItem

Added "eager" loading attribute to the image tags in two Astro components: TabContent and TestimonialItem. This optimization allows images to load immediately as soon as the page starts loading, improving the user's visual experience when first accessing the page.

src/components/sections/testimonials/TestimonialItem.astro

@@ -38,6 +38,7 @@ interface Props {
           class="h-8 w-8 rounded-full"
           src={avatarSrc}
           alt="Avatar Description"
+          loading={"eager"}
           inferSize
         />
       </div>

src/components/ui/blocks/TabContent.astro

@@ -49,5 +49,6 @@ This is the full example:
     class={secondClass}
     draggable={"false"}
     format={"avif"}
+    loading={"eager"}
   />
 </div>