Add ability to specify Grommet `full` with themed storybook (#5738)
Add ability to specify Grommet `full` with themed storybook (#5738)

* Add ability to specify Grommet full with themed storybook

* Update storybook/preview.js

Co-authored-by: Eric Soderberg <7357255ec89aa29cb38b14d4ed1295aca420bf0b@hpe.com>

Co-authored-by: Eric Soderberg <7357255ec89aa29cb38b14d4ed1295aca420bf0b@hpe.com>
HewlettPackard/grommet,HewlettPackard/grommet,HewlettPackard/grommet,grommet/grommet,grommet/grommet,grommet/grommet