Fixes #19789 - fix Layout/SpaceAroundOperators cop

Fixes #23550 - add to_hash method to Menu::Manager

Fixes #19787 - Fix Layout/SpaceAfterComma cop

Fixes #19857 - Fix Style/EachWithObject cop

fixes #19317, #10927 - move registries to autoload_once path

Partially reverts 70ce8fe to reinstate autoload_once_paths as the
preferred way to load registry-type objects with class variables
containing data set up during app initialisation (e.g. plugin
registrations, menu items.)...