[✨] Allow preventing Form action #44
Description
Is your feature request related to a problem?
When JS is enabled and you're using a Form only to redirect, it would save a server roundtrip to redirect immediately.
Describe the solution you'd like
action only fires after a custom onSubmit$ and only if the event is not prevented.
This is what the docs AI expects as the API
Describe alternatives you've considered
special attributes
Additional context
preventdefault is already used to allow action to run locally, so it will mean passing a fake event to onSubmit$ and checking if the default was prevented.