For some reason, with the recent changes and reverts with the editor,
some CSS ended up lazy loaded even though it was needed straight ahead
(switch, customize modal, etc).
This commit restores the assets structure that worked before. Note:
the website.edit_mode.scss file is however kept in the lazy loaded css
even though it was not like that before. The part that should not be
lazy loaded in it is moved to another file.
task-2064157
closesodoo/odoo#36368
Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com>