Resolve DCDEV-34 "Study area sa freemarker"
StudyAreaView (https://gitlab.ceh.ac.uk/eip/catalogue/-/blob/develop/web/src/study-area/src/View/StudyAreaView.js?ref_type=heads) now selects based on dataType=geoJson - https://gitlab.ceh.ac.uk/eip/catalogue/-/blob/develop/web/src/study-area/src/View/StudyAreaView.js?ref_type=heads#L49. This means that any older setup which passed in the WKT is no longer functioning. Hence pick up a few areas where this is true and tidy them up.