derive `AbiExample` for `GenericArray` overflow

[lcnr]

a lot of failures seem to be overflow errors due to this. Haven't yet looked into this at all

impacts:

• gemachain-sdk-1.8.2 https://crater-reports.s3.amazonaws.com/pr-133502-4/try%230c7fed2b7584d310ca8221267fa1b3bec4df427f/reg/gemachain-account-decoder-1.8.2/log.txt
• miraland-sdk-1.19.2 https://crater-reports.s3.amazonaws.com/pr-133502-4/try%230c7fed2b7584d310ca8221267fa1b3bec4df427f/reg/miraland-clap-utils-1.19.2/log.txt
• safecoin-sdk-1.14.17 https://crater-reports.s3.amazonaws.com/pr-133502-4/try%230c7fed2b7584d310ca8221267fa1b3bec4df427f/reg/safecoin-measure-1.14.17/log.txt

#![feature(specialization)]

use gemachain_frozen_abi::abi_example::AbiExample;
use generic_array::{typenum::U64, GenericArray};

fn main() {
    let _ = GenericArray::<u8, U64>::example();
}

[lcnr]

MVCE

#![feature(specialization)]

trait WithAssoc: 'static {
    type Assoc;
}
impl<T: 'static> WithAssoc for (T,) {
    type Assoc = ();
}

struct GenericArray<U: WithAssoc>(U::Assoc);

trait AbiExample {
    fn example();
}
impl<U: WithAssoc> AbiExample for GenericArray<U> {
    fn example() {}
}
impl<T> AbiExample for T {
    default fn example() {}
}

fn main() {
    let _ = GenericArray::<((),)>::example();
}

no idea why it fails idc