message: fix: only return an array if css prop is passed
diff: @@ -41,7 +41,7 @@ export const toCSSObject: GetStyleObject = ({ baseStyle }) => (props) => {
  const styleProps = objectFilter(rest, (_, prop) => isStyleProp(prop))
  const finalStyles = Object.assign({}, __css, baseStyle, styleProps, sx)
  const computedCSS = css(finalStyles)(props.theme)
  - return [computedCSS, cssProp]
  + return cssProp ? [computedCSS, cssProp] : computedCSS
  }
  interface StyledOptions {
  