Fix typo in types.py in the interrupt example (#5407)

Update types.py

This example still lacked to include `Command`.

libs/langgraph/langgraph/types.py

@@ -428,7 +428,7 @@ def interrupt(value: Any) -> Any:
         from langgraph.checkpoint.memory import MemorySaver
         from langgraph.constants import START
         from langgraph.graph import StateGraph
-        from langgraph.types import interrupt
+        from langgraph.types import interrupt, Command
 
 
         class State(TypedDict):