[MRV2][KVConnector] Fix missing build_connector_worker_meta (#38698)

Signed-off-by: Yifan Qiao <yifanqiao@inferact.ai>

vllm/v1/worker/gpu/kv_connector.py

@@ -93,6 +93,10 @@ class ActiveKVConnector(KVConnector):
         output.invalid_block_ids = self.kv_connector.get_block_ids_with_load_errors()
         output.kv_connector_stats = self.kv_connector.get_kv_connector_stats()
         output.kv_cache_events = self.kv_connector.get_kv_connector_kv_cache_events()
+        output.kv_connector_worker_meta = (
+            self.kv_connector.build_connector_worker_meta()
+        )
+
         if clear_metadata:
             self.kv_connector.clear_connector_metadata()
         return output