fix: restore content compatibility checks

src/components/ToolkitGrid.vue

@@ -1,6 +1,7 @@
 <script setup lang="ts">
 import BrandIcon from './BrandIcon.vue';
 import type { ToolkitGroup } from '@/content/types';
+import { brandIconAvailable } from '@/icons/brand-icons';
 
 defineProps<{ groups: readonly ToolkitGroup[] }>();
 </script>
@@ -11,7 +12,7 @@ defineProps<{ groups: readonly ToolkitGroup[] }>();
       <h3 :id="`${group.title}-heading`">{{ group.title }}</h3>
       <ul class="toolkit-items">
         <li v-for="technology in group.technologies" :key="technology.name" class="toolkit-item" data-testid="toolkit-technology">
-          <BrandIcon :label="technology.name" />
+          <BrandIcon v-if="brandIconAvailable(technology.name)" :label="technology.name" />
           <span>{{ technology.name }}</span>
         </li>
       </ul>