When fontWeights are defined the class names and values are not shown

[JoA-MoS]

When defining custom font weights the class names and values are not shown

repro steps:

1. create new tailwinds library
2. update font weight property with something like

fontWeight: {
    regular: 400,
    medium: 500,
    semibold: 600,
    bold: 700,
};

3. run config viewer

[hacknug]

@JoA-MoS just opened a PR with a fix for this.

@rogden left some comments on the PR with an alternative fix and some potential issues I see with the way this currently works. Not familiar with the codebase so I'm not sure those would 100% apply or not.