wit: unexpected error when referencing the package itself in exports

[Mossaka]

Consider this WIT:

package example:name;
world only-exports {
  export example:name/exports;
  export exports: interface {
      foo: func();
  }
}

However, when processing this with wasm-tools, it throws the following error:

error: package depends on itself
     --> testdata/issues/issue170.wit:8:10
      |
    8 |   export example:name/exports;
      |          ^-----------

Expected Behavior: The interface name with the WorldKey should reference the first export without throwing an error.