wit-bindgen-go crashes with error-context type

[kavoc-brown]

Generating Go bindings for any WIT that mentions error-context crashes with BUG: unknown wit.Primitive *wit.ErrorContext

Steps-To-Reproduce

go run ./cmd/wit-bindgen-go \
  generate \
  poc.wit

poc.wit (validated by wasm-tools component wit)

package demo:demo;

world demo {
  export foo: func() -> error-context;
}

Expected

writes generated Go bindings successfully.

Actual

crashes with panic: BUG: unknown wit.Primitive *wit.ErrorContext.

Environment

ubuntu 22.04, x86-64, Go 1.24.3