Reset widgets after submission in contact form 7, WPForms & Elementor

[merlinfuchs]

Reset the widget after the form has been submitted (both successful or unsuccessful) so users can submit again. This was requested by customers because users were having problems resubmitting a form after the field validation has failed because the FC solution has already been used.

The script used for elementor can potentially used for any form plugin that doesn't prevent the default submit event. (wpforms does prevent it) I only tested it with elementor and it might somehow break other form plugins tho

I'm not entirely sure if this should be default behavior or opt in as it might lead to more spam submissions. What do you think @gzuidhof?

[merlinfuchs]

I will merge this now and mint a new release. If we get requests because of the changed behavior we can introduce a setting to disable this.