ices/82926.rs: fixed with errors

=== stdout ===
=== stderr ===
error[E0412]: cannot find type `U` in this scope
 --> /home/runner/work/glacier/glacier/ices/82926.rs:5:44
  |
5 |     fn simd_insert<T>(x: T, idx: u32, val: U) -> T;
  |                    -                       ^ help: a type parameter with a similar name exists: `T`
  |                    |
  |                    similarly named type parameter `T` defined here

error[E0658]: inline-const is experimental
 --> /home/runner/work/glacier/glacier/ices/82926.rs:9:5
  |
9 |     const { simd_insert(U, 1_u32, 42_f32) }
  |     ^^^^^
  |
  = note: see issue #76001 <rust-lang/rust#76001> for more information
  = help: add `#![feature(inline_const)]` to the crate attributes to enable

error[E0658]: platform intrinsics are experimental and possibly buggy
 --> /home/runner/work/glacier/glacier/ices/82926.rs:3:8
  |
3 | extern "platform-intrinsic" {
  |        ^^^^^^^^^^^^^^^^^^^^
  |
  = note: see issue #27731 <rust-lang/rust#27731> for more information
  = help: add `#![feature(platform_intrinsics)]` to the crate attributes to enable

warning: type `f32x3` should have an upper camel case name
 --> /home/runner/work/glacier/glacier/ices/82926.rs:2:8
  |
2 | struct f32x3(f32, f32, f32);
  |        ^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `F32x3`
  |
  = note: `#[warn(non_camel_case_types)]` on by default

error[E0094]: intrinsic has wrong number of type parameters: found 1, expected 2
 --> /home/runner/work/glacier/glacier/ices/82926.rs:5:19
  |
5 |     fn simd_insert<T>(x: T, idx: u32, val: U) -> T;
  |                   ^^^ expected 2 type parameters

error[E0308]: mismatched types
 --> /home/runner/work/glacier/glacier/ices/82926.rs:9:25
  |
9 |     const { simd_insert(U, 1_u32, 42_f32) }
  |                         ^ expected `()`, found struct `f32x3`

error: aborting due to 5 previous errors; 1 warning emitted

Some errors have detailed explanations: E0094, E0308, E0412, E0658.
For more information about an error, try `rustc --explain E0094`.
==============