[FIX] web: `self.menu.change_menu_section` is not a function
[FIX] web: `self.menu.change_menu_section` is not a function

Revision on https://github.com/odoo/odoo/commit/19eacf7d23c9413de4430a3422b5ed74b37ef242

The commit above changed the menu in community, so that it
looks like enterprise. To do so, it copies the menu management
from the enterprise repository to the community repository.

Some code about the home menu has been removed, since it is replaced
with the app menu in community. However, some functions have been
removed by accident, such as `change_menu_section`.

Closes #27436
ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo