Ordered_action in robustify has incorrect selection options

[karo702]

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In the robustify pipeline, the available selection options for ordered_action are currently "factor", "factor!", "matrix", "matrix!", "ignore" and "ignore!". However, ordered factors cannot be converted into a matrix. In addition to "factor(!)" and "ignore(!)", the correct options for ordered_action would be "numeric", "numeric!", "integer" and "integer!".