redundant-expr does not catch always-True `if`

[A5rocks]

Bug Report

If the expression for an if statement is always true, then it is obviously redundant.

To Reproduce

from typing import Literal

class X:
    def __bool__(self) -> Literal[True]:
        return True

if X():
    print("blah!")

Expected Behavior

Error on if X()

Actual Behavior

No error

Your Environment

• Mypy version used: 1.17.1
• Mypy command-line flags: --enable-error-code=redundant-expr
• Mypy configuration options from mypy.ini (and other config files): N/A
• Python version used: 3.14