False positive with splat and explicit kwarg

Bug Report

Mypy reports multiple values for a kwarg if args are given via splat and the kwarg is explicitly set.

To Reproduce

def foo(x: int, y: int, z: str) -> None:
    print(x, y, z)

args = [1, 2]
foo(*args, z="...")

Expected Behavior

Mypy should not report any problems.

Actual Behavior

mypysandbox.py:5: error: "foo" gets multiple values for keyword argument "z"  [misc]
mypysandbox.py:5: error: Argument 1 to "foo" has incompatible type "*list[int]"; expected "str"  [arg-type]
Found 2 errors in 1 file (checked 1 source file)

Your Environment

$ mypy --version
mypy 1.19.1 (compiled: yes)

$ python --version
Python 3.12.12

Mypy config from pyproject.toml:

[tool.mypy]
strict = true
allow_redefinition =  true

Start with the minimal Python reproducer in the issue and compare mypy's handling of a splatted list followed by an explicit keyword argument. Use the strict configuration from pyproject.toml when checking the behavior; done means the example produces no diagnostics, including no duplicate-keyword or incompatible-type errors.