Add default keyboard mappings for flattened object nav scripts (#15065)
Link to issue number:
Fixes #15053
Summary of the issue:
Object navigation can be difficult to grasp for some people. It is helpful to assign the flattened object nav gestures (that are now only available on touch screen)by default.
Description of user facing changes
See change log items
Description of development approach
Added gestures to scripts in globalCommands.