Update the "Email" and "Calendars, Contacts, Files" to match the
GOA design for GNOME 46, as "E-mail" and "Calendar, Contacts and
Files", respectively.
See: Teams/Design/settings-mockups!68
Remove the GOA subprocess helper and use GoaClient directly.
The GoaClient is loaded asynchronously, with the panel being marked
insensitive until ready. Any `CcPanel::parameters` passed while loading
are deferred until the client is ready.
