prevent sending an empty extra_vars in iBGP check run

gso/workflows/router/update_ibgp_mesh.py

@@ -155,12 +155,12 @@ def add_all_pe_to_p_real(subscription: dict[str, Any], tt_number: str, process_i
 
 
 @step("Verify iBGP session health")
-def check_ibgp_session(subscription: Router) -> LSOState:
+def check_ibgp_session(subscription: dict[str, Any]) -> LSOState:
     """Run a playbook using the provisioning proxy, to check the health of the new iBGP session."""
     return {
         "playbook_name": "gap_ansible/playbooks/check_ibgp.yaml",
-        "inventory": {"all": {"hosts": {subscription.router.router_fqdn: None}}},
-        "extra_vars": {},
+        "inventory": {"all": {"hosts": {subscription["router"]["router_fqdn"]: None}}},
+        "extra_vars": {"subscription": subscription},
     }