Fix/new streaming system (#990)

* fix: add new langgraph streaming protocol

* fix: go to the next chunk after receiving a manually emitted state

* chore: update all packages

---------

Co-authored-by: Markus Ecker <markus.ecker@gmail.com>

sdk-python/copilotkit/langgraph_agent.py

@@ -358,6 +358,7 @@ class LangGraphAgent(Agent):
                     running=True,
                     active=True
                 ) + "\n"
+                continue
 
 
             if emit_intermediate_state and emit_intermediate_state_until_end is None: