mypy-internally in FuncBase class, the method name has_self_or_cls_argument() is wrong saying argument instead of parameter #20941

*Notes:

• mypy 1.19.1
• Python 3.14.0

mypy-internally in FuncBase class, the method name has_self_or_cls_argument() is wrong saying argument instead of parameter so it should be has_self_or_cls_parameter():

*Notes:

• has_self_or_cls_argument-related wrong code should also be corrected.

From:

has_self_or_cls_argument

To:

has_self_or_cls_parameter