Moving off @mui/styles?

[shaunco]

The @mui/styles page says:

@mui/styles was deprecated with the release of MUI Core v5 in late 2021. It depended on JSS as a styling solution, which is no longer used in @mui/material.

@mui/styles is not compatible with React.StrictMode or React 18, and it will not be updated.

This documentation remains here for those working on legacy projects, but we strongly discourage you from using @mui/styles when creating a new app with Material UI—you will face unresolvable dependency issues.

Please use @mui/system instead.

Would be great to see ra-components migrated to @mui/system!