spirv attribute errors in proc macros don't show errors properly due to span being the macro invocation

If you codegen spirv entry points and you typo an attribute, you get this error not showing you which one you typo'ed, since the span is from the macro invocation.

  error: unknown argument to spirv attribute
    --> node-graph/graster-nodes/src/adjustments.rs:44:1
     |
  44 | #[node_macro::node(category("Raster: Adjustment"), shader_node(PerPixelAdjust))]
     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     |
     = note: this error originates in the attribute macro `node_macro::node` (in Nightly builds, run with -Z macro-backtrace for more info)

System Info

• Rust-GPU master

Reproduce el error tipográfico en el atributo spirv de node-graph/graster-nodes/src/adjustments.rs:44 e inspecciona el informe de errores de la macro de atributo node_macro::node. Traza cómo se selecciona el span del atributo y verifica después que un argumento desconocido identifica el atributo problemático, en lugar de identificar únicamente la invocación de la macro.