Update webapp - fix hero animation to use cover layout

Use DotLottie's native layout prop with fit: 'cover' instead of
CSS object-cover which doesn't work on canvas elements.

app/components/hero/HeroBackground.vue

@@ -6,7 +6,8 @@
         src="/animations/supply-chain.lottie"
         autoplay
         loop
-        class="absolute inset-0 w-full h-full object-cover"
+        :layout="{ fit: 'cover', align: [0.5, 0.5] }"
+        class="absolute inset-0 w-full h-full"
         :style="{
           opacity: 1 - collapseProgress * 0.7,
           transform: `scale(${1 + collapseProgress * 0.1})`