Fix sizing of image previews in vue mode (#6557)

#6352 apparently introduced a regression in scaling for image previews

This PR fixes image scaling and, as a more opinionated change, makes the
image dimensions stay adjacent to the image
<img width="1283" height="668" alt="image"
src="https://github.com/user-attachments/assets/56fabe30-665f-45bb-9ed5-1c1bb79d7e54"
/>

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-6557-Fix-sizing-of-image-previews-in-vue-mode-2a06d73d365081e4b2a1ebff7b42e9a8)
by [Unito](https://www.unito.io)

---------

Co-authored-by: github-actions <github-actions@github.com>

src/renderer/extensions/vueNodes/components/LGraphNode.vue

@@ -107,7 +107,7 @@
         <NodeWidgets v-if="nodeData.widgets?.length" :node-data="nodeData" />
 
         <!-- Custom content at reduced+ detail -->
-        <div v-if="hasCustomContent" class="min-h-0 flex-1">
+        <div v-if="hasCustomContent" class="min-h-0 flex-1 flex">
           <NodeContent :node-data="nodeData" :media="nodeMedia" />
         </div>
         <!-- Live mid-execution preview images -->