False positive when extending both Enum and another class

False positive when extending both Enum and another class:

```python
from enum import Enum
from typing import NamedTuple

class C(NamedTuple):
n: int

class E(C, Enum):
c1 = C(1) # <- Pyright error on the C constructor call
# Error message:
# Argument of type "C" cannot be assigned to parameter "n" of type "int" in function "__new__"
# "C" is not assignable to "int"

# At runtime, everything seems to work fine:
print(E.c1.n) # -> 1
print(E.c1.name) # -> 'c1'
```
The error remains if instead of being a ```NamedTuple```, C has a simple ```__init__``` method assigning ```self.n```

Tested on Python v3.14 with Pylance v2025.9.1

Run the provided example with Python 3.14 and reproduce the diagnostic for the constructor call in the multiple-inheritance Enum case. Read the handling of Enum and inherited constructors in the type checker, then add a regression test showing that the valid C(1) call produces no false positive while invalid arguments remain diagnosed.

Written by the indexing model from the issue text.