fix(ci): pass image URL to bluesky workflow to avoid OG fetch timeout

The reusable workflow was timing out trying to fetch OG tags from the
live site before it fully propagated. By passing the image URL directly
from the RSS feed, we skip the OG fetch entirely.

Author: CalvinAllen

.github/workflows/bluesky-new-post.yml

@@ -56,6 +56,7 @@ jobs:
       embed_url: ${{ needs.detect.outputs.post_url }}
       embed_title: ${{ needs.detect.outputs.post_title }}
       embed_description: ${{ needs.detect.outputs.post_description }}
+      embed_image_url: ${{ needs.detect.outputs.post_image_url }}
     secrets:
       BLUESKY_USERNAME: ${{ secrets.BLUESKY_USERNAME }}
       BLUESKY_APP_PASSWORD: ${{ secrets.BLUESKY_APP_PASSWORD }}