Subcube elect doesn't work with wgpu

[maxtremblay]

Part of the solution seems to be to replace the beginning of the current Display implementation in cubecl-wpgu/src/compiler/wgsl/subgroup.rs for Subgroup with

impl Display for Subgroup {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match self {
            Subgroup::Elect { out } => {
                let out = out.fmt_left();
                writeln!(f, "{out} = subgroupElect();")
            }
            // ...

However, I still get the following error

caused by:
  In Device::create_shader_module

Shader '' parsing error: no definition in scope for identifier: 'subgroupElect'
   ┌─ wgsl:28:10
   │
28 │ let _2 = subgroupElect();
   │          ^^^^^^^^^^^^^ unknown identifier


      no definition in scope for identifier: 'subgroupElect'