[IMP] web: multi-click on save on view form (no fp)

When clicking on save several time when editing a view form it can be
saved several times which can be an issue for one to many.

The normal happenstance when saving should be as follow:

-> save (click)
-> wait write result
-> received write result
-> reload the form with updated data and updates buttons

But when clicking several time, it could become:

-> save (click)
-> wait write result
-> received write result
-> save (click)
-> wait write result
-> received write result
-> reload the form with updated data and updates buttons

This commit only reinstate the saving feature once the form is reloaded.

closes #11926
opw-671793

note: no need to forward-port