build: add @material/tokens as dependency to material-components-web package (#7228)
build: add @material/tokens as dependency to material-components-web package (#7228)

@material/tokens as dependency to material-components-web package is required for [CSS bundle factory](https://github.com/material-components/material-components-web/blob/3e4c6dca1921caa57e1097c03135a7ddf614f003/scripts/webpack/css-bundle-factory.js#L221).
material-components/material-components-web,material-components/material-components-web,material-components/material-components-web