This is mainly a form_builder compatibility release.
Display a throbber and lock the form during validations. This was necessary to avoid unintended double-submits and thus double-payments.
Adapt to a change in the webform_paymethod_select JS API.
Adapt to a change made in the JS-API provided by webform_paymethod_select.
This mainly fixes a bug that caused a fatal error when displaying node forms and caused the migration to lose data.
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