fix(rxSortUtil): breaking tests due to not having a pager present

rxSortUtil.sortCol is breaking local tests due to the lack of a pager not being present.  

Other proposed solutions were:

* To remove pager logic from rxSortUtil, and move it to the wrapper function of sortCol defined outside.  Doing so might break user experience, while it's being patched, that's already being used elsewhere.
* To allow the pager being passed into sortCol when called.  Same problem as above. 

So opting for just a check, and a note.