Can nodes use other argument names than node_input?

https://github.com/google/adk-docs/blob/ab749867b0445b51da40dad69f079180c9c87df6/docs/graphs/dynamic.md?plain=1#L247-L265

Test code:
```
@node
def city_time_function(city: str):
return "Hello"

@node(rerun_on_resume=True)
async def city_workflow(ctx: Context):
city_time = await ctx.run_node(city_time_function, "Paris")
return city_time

session_service = InMemorySessionService()
session = await session_service.create_session(app_name=APP_NAME, user_id=USER_ID, session_id=SESSION_ID)
runner = Runner(agent=city_workflow, app_name=APP_NAME, session_service=session_service)
content = types.Content(role='user', parts=[types.Part(text="hello")])
events = runner.run(user_id=USER_ID, session_id=SESSION_ID, new_message=content)
for event in events:
pass
```
Error:
```
ValueError: Missing value for parameter "city" of function "city_time_function". It was not found in state and has no default value.
```
Changeing to node_input works:

```
@node
def city_time_function(node_input: str):
return "Hello"
```

Python 3.14.6
google-adk==2.6.3

Start with the linked docs/graphs/dynamic.md section at lines 247-265 and reproduce the supplied Python example using @node and ctx.run_node. Determine whether a parameter named city should be supported or whether the documentation must require node_input; done when the behavior and usage are made consistent and verified against the example.

Written by the indexing model from the issue text.