STP-163: Fix redundancy in `Area.processStyle` where evaluation would always use the first option; just assign the first option if it is already to have been determined.
STP-163: Fix redundancy in `Area.processStyle` where evaluation would always use the first option; just assign the first option if it is already to have been determined.

- `fill`, `stroke`, `strokeWidth` would have already been evaluated in `Area.dataProcessor`.

ihmeuw/beaut,ihmeuw/beaut,ihmeuw/ihme-ui,ihmeuw/ihme-ui,ihmeuw/beaut,ihmeuw/ihme-ui