expose-ids: pass the correct field for global ID

[mockersf]

Checklist

• Run cargo clippy.
• Run RUSTFLAGS=--cfg=web_sys_unstable_apis cargo clippy --target wasm32-unknown-unknown if applicable.
• Add change to CHANGELOG.md. See simple instructions inside file.

Connections

introduced in #3657

Description

Compiling with feature expose-ids is failing:

   Compiling wgpu v0.15.0 (/wgpu/wgpu)
error[E0308]: mismatched types
    --> /wgpu/wgpu/src/backend/web.rs:61:13
     |
56   |         Self::new(
     |         --------- arguments to this function are incorrect
...
61   |             identified.1,
     |             ^^^^^^^^^^^^ expected struct `NonZeroU64`, found struct `PhantomData`
     |
     = note: expected struct `NonZeroU64`
                found struct `PhantomData<T>`
note: associated function defined here
    --> /wgpu/wgpu/src/context.rs:1013:12
     |
1013 |     pub fn new(id: NonZeroU64, #[cfg(feature = "expose-ids")] global_id: NonZeroU64) -> Self {
     |            ^^^                 ----------------------------------------------------

error[E0308]: mismatched types
    --> /wgpu/wgpu/src/backend/web.rs:74:13
     |
69   |         Self::new(
     |         --------- arguments to this function are incorrect
...
74   |             id.1,
     |             ^^^^ expected struct `NonZeroU64`, found struct `PhantomData`
     |
     = note: expected struct `NonZeroU64`
                found struct `PhantomData<T>`
note: associated function defined here
    --> /wgpu/wgpu/src/context.rs:1013:12
     |
1013 |     pub fn new(id: NonZeroU64, #[cfg(feature = "expose-ids")] global_id: NonZeroU64) -> Self {
     |            ^^^                 ----------------------------------------------------

The global ID is on field 0 of Identified, not 1

Testing
Explain how this change is tested.