Generalize payload of `FormStatus.SubmissionFailed` constructor

[alex35mil]

I'm thinking of making payload of FormStatus.SubmissionFailed constructor generic, i.e. turn this:

module FormStatus = {
  type t('field, 'message) =
    | Editing
    | Submitting
    | Submitted
    | SubmissionFailed(list(('field, 'message)), option('message));
};

into this:

module FormStatus = {
  type t('error) =
    | Editing
    | Submitting
    | Submitted
    | SubmissionFailed('error);
};

I found that I never (literally, zero times) used current payload but do use domain specific error types all the time and put those in component state. With generic version it's still possible to use currently hardcoded type by defining it in user land but it would make it more flexible for other use-cases. I wonder how others use it (if use it at all).

[alex35mil]

Downside is that it will require addition of a type to a form config... 🤔