Apply suggestions from code review

Co-authored-by: Sebastian Rittau <sebastian.rittau@zfutura.de>

Author: hoel-bagard

stubs/behave/behave/step_registry.pyi

@@ -5,13 +5,15 @@ from behave.runner import Context
 
 _F = TypeVar("_F", bound=Callable[Concatenate[Context, ...], None])
 
-def given(step_text: str, **kwargs: Any) -> Callable[[_F], _F]: ...
-def when(step_text: str, **kwargs: Any) -> Callable[[_F], _F]: ...
-def then(step_text: str, **kwargs: Any) -> Callable[[_F], _F]: ...
-def step(step_text: str, **kwargs: Any) -> Callable[[_F], _F]: ...
+def given(step_text: str, **kwargs) -> Callable[[_F], _F]: ...
+def when(step_text: str, **kwargs) -> Callable[[_F], _F]: ...
+def then(step_text: str, **kwargs) -> Callable[[_F], _F]: ...
+def step(step_text: str, **kwargs) -> Callable[[_F], _F]: ...
 
 # Title-case aliases
 Given = given
 When = when
 Then = then
 Step = step
+
+def __getattr__(name: str) -> Incomplete: ...