Combining generic_const_exprs with adt_const_params talks about derefs that don't exist in the code #90455

#![feature(generic_const_exprs, adt_const_params)]

struct FieldElement<const N: &'static str> {
    n: [u64; num_limbs(N)],
}
const fn num_limbs(_: &str) -> usize {
    0
}

error: overly complex generic constant
 --> src/lib.rs:5:14
  |
5 |     n: [u64; num_limbs(N)],
  |              ^^^^^^^^^^-^
  |                        |
  |                        dereferencing is not supported in generic constants
  |
  = help: consider moving this anonymous constant into a `const` function
  = note: this operation may be supported in the future