This change reorganizes styling variables so they follow Odoo’s standard asset structure. It should not change day-to-day behavior, but it helps keep the Accounting and HR Org Chart areas easier to maintain and less prone to future styling issues.

Some variables were placed at the beginning of the backend helper.
While it was working, the normal convention is to place them at the
end of the variables helper.

Marketing Automation now uses the correct asset bundles for its styling and interface resources. This internal cleanup helps keep the module aligned with the platform’s asset structure and reduces the risk of loading or maintenance issues.

See https://github.com/odoo/odoo/pull/28203