fix(tenancy): use absolute URL in team invitation email link

Email clients need absolute URLs to make links clickable. The
acceptance_link was a relative path (/store/invitation/accept?token=...)
which rendered as plain text. Now prepends the platform domain with
the correct protocol.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

app/modules/prospecting/routes/api/admin_interactions.py

@@ -48,7 +48,7 @@ def create_interaction(
     interaction = interaction_service.create(
         db,
         prospect_id=prospect_id,
-        user_id=current_admin.user_id,
+        user_id=current_admin.id,
         data=data.model_dump(exclude_none=True),
     )
     db.commit()