Fix: Make breadcrumbs non-draggable. (#6191)

## Summary

Prevents accidentally trying to load the current site as if it were a
workflow.

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-6191-Fix-Make-breadcrumbs-non-draggable-2946d73d365081bda833c7a413903e97)
by [Unito](https://www.unito.io)

Author: DrJKL

src/components/breadcrumb/SubgraphBreadcrumbItem.vue

@@ -5,6 +5,7 @@
       value: item.label,
       showDelay: 512
     }"
+    draggable="false"
     href="#"
     class="p-breadcrumb-item-link h-12 cursor-pointer px-2"
     :class="{