[REF] web: Adapt views/actions to new control panel

Some web actions/controllers/viewsl have been adapted to properly instantiate the
newly refactored control panel and update it accordingly. We needed to adapt the
starting mechanism of actions and controllers to ensure that the control panel
instantiation did not delay the loading of any widget.

Part of task 2196029

Co-authored-by: Mathieu Duckerts-Antoine <dam@odoo.com>