Page form state not updated after submit

[aszenz]

In case of successful form submit, the form state is not reinitialized from app.data.

After successfully submitting the form it should reflect what got saved in the back-end and not what the user had entered in the form previously.

When javascript is disabled, this works by doing a redirect to the get route of the form which fetches the saved form state and initializes the form again, the same behavior should be present with javascript on.

Primary use case is to ensure that the user always sees the saved values of the form, in some cases the saved value is also different from the user input.