See community commit for additional changes.

Prior to this commit, modules that add elements (fields, references,
etc.) to the website_form registry, would do so inside the
`website.assets_editor` bundle.
It creates a module dependency error since [1] + [2]:
The form options (`s_website_form/options.js`) defined in
`website.assets_wysiwyg` requires the registry defined in
`website.assets_editor`. But since [1] and [2], the
`website.assets_wysiwyg` bundle is loaded inside the iframe without
`website.assets_editor`, as only `website.assets_wysiwyg` is needed to
properly display and interact with the editor. (Most of the bundle is
not necessary and a later IMP will either only load the CSS needed or
split the bundle).

This commit moves the modules that creates the registry as well as
modules that extend it to the `website.assets_wysiwyg` bundle, fixing
the dependency error. Though they are not required inside the iframe,
the bundle can now be loaded without the need of assets_editor,
removing the missing dependencies.

[1]: https://github.com/odoo/odoo/commit/03c552690b15cbf2e7d6b7812386ac64042219af
[2]: https://github.com/odoo/odoo/commit/a154ee7ad6fd3ebdd38943e1439badae11c3151d

See also PR Community: https://github.com/odoo/odoo/pull/110811