fix ext icon

src/components/browser-data/ExtensionsList.vue

@@ -25,7 +25,7 @@ const emit = defineEmits<{
       </div>
 
       <article v-for="extension in extensions" :key="extension.id" class="data-table-row extensions-grid">
-        <div class="extension-icon table-icon">
+        <div class="extension-icon table-icon" :class="{ filled: Boolean(extension.iconDataUrl) }">
           <img v-if="extension.iconDataUrl" :src="extension.iconDataUrl" :alt="`${extension.name} icon`" />
           <span v-else>{{ extensionMonogram(extension.name) }}</span>
         </div>
@@ -126,6 +126,10 @@ const emit = defineEmits<{
   overflow: hidden;
 }
 
+.extension-icon.filled {
+  background: transparent;
+}
+
 .table-icon {
   width: 36px;
   height: 36px;