KSP2 asStarProjectedType return KSTypeArgument without type

This is a behaviour change when switching to KSP2.
Tested in version `2.1.0-1.0.29` with the `ksp.useKSP2` gradle property.

```kotlin
class Test {
}
```

In KSP processor:
```kotlin
val type = declaration.asStarProjectedType()
println(type.arguments.single())
```
Before KSP2 this prints `STAR Any`
With KSP2 this prints `STAR null`

How do I get the a type from a KSClassDeclaration which with its type arguments as upper bounds in KSP2?