- fixed xml data files order, otherwise form field would not be whitelisted,
including `email_to`, so the mail would not be send.
- add the same data-for behavior from website_crm to website, to be able to
prefill a field with an URL param
- removed the fallback data-for in website_crm, the JS in now in charge of
doing that. Plus it was creating a misheavior -> you could have prefill set
to false but still, it would prefill the user info
- fixed the form option so the field.name is not used as field.string if there
is already an explicitely set field.string..
- adapt field name in /contactus form (xml view), form snippet (registry) and
crm form (registry) for more consistence
- added the prefill option set to true by default on /contactus (to fit what
we had before). This came with a change in the test as we don't need to
enable it anymore.
- added also the prefill option to true by default on form snippet
Part of #69888
task-2462993