fix #37 by cleaning unintended insertConfig atts on hidden input

[jankapunkt]

The insertConfig is deleted in line 56:

delete this.data.atts.insertConfig;

but there is the case that it is still present or "reassigned" by autoform (the reactivity makes properties reappear, I think) and this comes when the template re-renders but the onCreated has been only called once, so the insertConfig is not stripped again.

It is then later assigned to the input atts at

<input value="{{fileId}}" type="hidden" {{this.atts}}>

So I thought before messing with the whole reactivitity and break the whole package we just "clean" the atts using a helper when the template is drawn:

<input value="{{fileId}}" type="hidden" {{inputAtts this}}>

 inputAtts(formContext) {
    const { atts } = formContext;
    if (!atts) return;
    delete atts.insertConfig;
    return atts;
  }

Runs fine now on my side with any insert config. Can someone please confirm?

[dr-dimitru]

lgtm! Thank you @jankapunkt