spotless configuration crash when using convention plugins combined with settings plugins.

- Gradle 8.0.2
- Spotless 6.17.0

Stacktrace:

```
* What went wrong:
A problem occurred configuring root project 'foo'.
> Could not resolve all files for configuration ':spotless1316845977'.
> Cannot resolve external dependency com.facebook:ktfmt:0.43 because no repositories are defined.
Required by:
project :
```

If a convention plugin applies Spotless on the root project and this convention plugin is applied via a settings plugin, I got this crash.

I think there is a warning from Gradle about resolving this configuration in the configuration phase instead of lazily too.

In the root project, it is used `predeclareDepsFromBuildscript()`

If I apply the convention plugin directly instead of being applied by the settings plugin this is not happening.