Sync SPEC 7 with scipy

ref: scipy/scipy#23276

Author: jorenham

spec-0007/transition_to_rng.py

@@ -1,5 +1,6 @@
 import numpy as np
 import functools
+import inspect
 import warnings
 
 
@@ -160,6 +161,13 @@ def wrapper(*args, **kwargs):
 
             return fun(*args, **kwargs)
 
+        # Add the old parameter name to the function signature
+        wrapped_signature = inspect.signature(fun)
+        wrapper.__signature__ = wrapped_signature.replace(parameters=[
+            *wrapped_signature.parameters.values(),
+            inspect.Parameter(old_name, inspect.Parameter.KEYWORD_ONLY, default=None),
+        ])
+
         return wrapper
 
     return decorator