Fixes #35287 - Create column selector on host index page (#9323)

• Fixes #35287 - Create column selector on host index page

• Fixes #35673 - Use name column as always checked column

• Refs #35287 - Improve locked pagelet handling

Co-authored-by: pkoprda <peto.koprda@gmail.com>...

Fixes #35361 - Make columns on host index page selectable

Fixes #19892 - Fix Style/Proc cop

Fixes #19896 - Fix Style/RedundantSelf 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.)...