Mypy error "__ does not return a value" when using `lambda` with multiple expression

Bug Report

(A clear and concise description of what the bug is.)

To Reproduce

from typing import Callable, cast
import os
import re
import sys
import time
import click
import inquirer # type: ignore
import halo # type: ignore

################################################
@click.command()
def main():
    options = [
        inquirer.List("mainOption", message="What would you like to do?", 
        choices=[
            ("1. Option 1.", pick1),
            ("2. Option 2.", pick2),
            ("3. Quit the program...", lambda: (click.echo(click.style("Bye bye!", fg="magenta")), sys.exit(0)))
        ],
        )
    ]

    answer = inquirer.prompt(options)
    selected_opt = cast(Callable[[], None], answer.get("mainOption"))

    if selected_opt is not None:
        selected_opt()

########################
def pick1() -> None:
        click.echo("Select opt 1")

def pick2() -> None:
    click.echo("Select opt 2")


################################################
if __name__ == "__main__":
    main()

Error on line:

# "echo" does not return a value
("3. Quit the program...", lambda: (click.echo(click.style("Bye bye!", fg="magenta")), sys.exit(0)))

If I drop an expression for lambda, everything is fine:

# No error
("3. Quit the program...", lambda: (click.echo(click.style("Bye bye!", fg="magenta"))))

Your Environment

• Mypy version used: Mypy Type Checker v2023.6.0 "A Visual Studio Code extension with support for the Mypy type checker. This extension ships with mypy=1.6.1."
• Mypy command-line flags:
• Mypy configuration options from mypy.ini (and other config files):
• Python version used: 3.12.0

まず、提供された lambda の例を再現し、エラーを報告しない 1 式のバリアントと比較します。mypy が lambda 内のタプル式をどのようにチェックするかを追跡します。複数式の有効なコールバックが一貫して処理され、関連する戻り値の診断が失われなければ完了です。