Function handleChange

packages/react/src/ThemeProvider.tsx:169–172

(event: MediaQueryListEvent)

    }

    function handleChange(event: MediaQueryListEvent) {
      const isNight = event.matches
      setSystemColorMode(matchesMediaToColorMode(isNight))
    }

    // eslint-disable-next-line @typescript-eslint/no-unnecessary-condition
    if (media) {