Update the way of getting default objects

[milanholemans]

Change the way to retrieve default objects

As decided in #6493, we've decided to take another route to get a default value from a command.

Right now, some commands return a default value when you don't specify any options. The idea is that the user should specify --default to get a default object.

Options to add

Options	Description
--default	Get the default (list, environment, page, ...)

Commands to refactor

• pp environment get
• flow environment get
• pa environment get
• Check if there are more commands we should update with this change