add aria labels on vue node widgets (#6032)

## Summary

Adds aria labels to buttons and widgets without pre-existing text
labels.

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-6032-add-aria-labels-on-vue-node-widgets-28a6d73d36508198a1c0ef7098ad24e8)
by [Unito](https://www.unito.io)

src/renderer/extensions/vueNodes/widgets/components/WidgetButton.vue

@@ -3,7 +3,12 @@
     <label v-if="widget.name" class="text-sm opacity-80">{{
       widget.name
     }}</label>
-    <Button v-bind="filteredProps" size="small" @click="handleClick" />
+    <Button
+      v-bind="filteredProps"
+      :aria-label="widget.name || widget.label"
+      size="small"
+      @click="handleClick"
+    />
   </div>
 </template>