message: Switch type annotations in starlark_module to ConstFrozenString
  Summary: Want to migrate away from ConstFrozenValue
diff: @@ -113,8 +113,9 @@ fn render_fun(x: StarFun) -> TokenStream {
  let set_type = type_attribute.map(|x| {
  quote! {
  - static TYPE: starlark::values::ConstFrozenValue =
  - starlark::values::ConstFrozenValue::new(#x);
  + const TYPE_N: usize = #x.len();
  + static TYPE: starlark::values::ConstFrozenStringN<TYPE_N> =
  + starlark::values::ConstFrozenStringN::new(#x);
  func.set_type(TYPE.unpack());
  }
  });
  