`missing_panics_doc` shouldn't be triggered in constant environments

[c410-f3r]

IFAICT, documentation around panic! is about runtime behavior. rustc will automatically point to the panic message at compile-time when working with constants.

#![deny(clippy::missing_panics_doc)]

pub fn foo<const N: usize>() {
    const {
        if N == 0 {
            panic!();
        }
    }
}

pub fn main() {
    foo::<0>();
}