False-negative `signature-differs` with kw-only args

[cdce8p]

Bug description

The following example should emit signature-differs due to different default values.

class Parent:
    def statement(self, *, future = None):
        pass

class Child(Parent):
    def statement(self, *, future):  # should emit 'signature-differs'
        pass

Removing * will yield:

W0222: Signature differs from overridden 'statement' method (signature-differs)

Configuration

No response

Command used

pylint test.py

Pylint output

-

Expected behavior

W0222: Signature differs from overridden 'statement' method (signature-differs)

Pylint version

pylint 2.11.2-dev0
astroid 2.8.5-dev0
Python 3.10.0 (v3.10.0:b494f5935c, Oct  4 2021, 14:59:20) [Clang 12.0.5 (clang-1205.0.22.11)]

OS / Environment

No response

Additional dependencies

No response