REGR: mypyc 0.971 seems to not handle keyword-only arguments when unpickling (and shallow copying)

Bug Report

The following worked with 0.961: object's whose __init__ has a keyword-only argument can no longer be unpickled.

To Reproduce

test.py

from typing import Any

class Test:
    def __init__(self, *, x: Any) -> None:
        ...

save_load.py

import pickle
from test import Test

test = Test(x=1)

with open("test.pickle", mode="w+b") as file:
    pickle.dump(test, file)
with open("test.pickle", mode="r+b") as file:
    pickle.load(file)

$ mypyc test.py
$ python save_load.py 
Traceback (most recent call last):
  File "save_load.py", line 9, in <module>
    pickle.load(file)
TypeError: __init__() missing required keyword-only argument 'x'

Expected Behavior
No TypeError

Actual Behavior
TypeError

Your Environment

• Mypy version used: 0.971
• Python version used: 3.10.4
• Operating system and version: Fedora Silverblue

Start by running the mypyc test.py and save_load.py reproduction with Python 3.10.4, then compare the generated behavior with the reported 0.961 and 0.971 versions. Done means the pickled Test instance with the keyword-only x argument loads successfully without TypeError, including the shallow-copy case mentioned in the title.