CopyStop: Make form button row better match Figma design

Author: Huulivoide

ui/src/components/stop-registry/stops/stop-details/stop-version/StopVersionForm.tsx

@@ -76,7 +76,7 @@ export const StopVersionForm: FC<StopVersionFormProps> = ({
         />
       )}
 
-      <Row className="justify-end space-x-4">
+      <Row className="-mx-12 !-mb-8 justify-end space-x-4 border border-light-grey bg-background px-12 py-2">
         <SimpleButton inverted onClick={onCancel} testId={testIds.cancelButton}>
           {t('cancel')}
         </SimpleButton>