Odoo Studio's "Edit Menu" and "New Model" options have been fully modernized in the user interface. This keeps these app customization tools aligned with the newer framework, improving maintainability and helping ensure a more consistent Studio experience over time.

Before this commit, when in studio and in an app, the two navbar's menu items "Edit Menu" and "New Model" were only partially converted to owl.

This commit converts them fully, taking advantage of owl 2.