Mention that use:enhance resets the form in the tutorial

[samausir]

It's mentioned in the docs that use:enhance calls form.reset, but in the tutorial there's no mention of it. As someone who just spent a full day debugging why my custom inputs disappear for a second between form submissions and data reload, I'd argue this is a big deal and deserves a big red banner on top (because it kinda pulls the rug from under you by directly manipulating DOM and bypassing the svelte bindings). Or if not that, then it should be an entry in the bullet list of the things it does in the aforementioned tutorial page.

[dummdidumm]

I don't think we should add this to the tutorial, but we should link to the documentation so you know where to find more details