Walrus operator causes no overload match for str.join in dataclass

[ostr00000]

Describe the bug

Pyright reports an error when a walrus operator is used while passing a variable to str.join and then to a dataclass.
The error is: No overloads for "join" match the provided arguments.

Code or Screenshots

from dataclasses import dataclass

@dataclass
class T_dataclass:
    base: list[str]
    joined: str

T_dataclass(
    base=(b := ['abc', 'def']),
    joined=' '.join(b),
)

Similar code with no error

• when we define variable not in walrus, then there is no error:

b = ['abc', 'def']
T_dataclass(base=b, joined=' '.join(b))

• when we define normal class instead of dataclass, then there is no error:

class T_normal:
    def __init__(self, base: list[str], joined: str):
        self.base = base
        self.joined = joined

b = ['abc', 'def']
T_normal(base=b, joined=' '.join(b))

T_normal(
    base=(b := ['abc', 'def']),
    joined=' '.join(b),
)

VS Code extension or command-line

Error detected in VS Code by Pylance. Pylance version is 2024.12.1.

Also, the error is replicated in pyright playground for version 1.1.391.