[KSP2] Room PROCESSING_ERROR

Hi, I am using the following libraries
```
kotlin = "2.0.21"
kotlinKsp = "2.0.21-1.0.26"
room = "2.6.1"
```
and have KSP2 turned on
`ksp.useKSP2=true`

I am getting this PROCESSING_ERROR error:
```
e: [ksp] Entities and POJOs must have a usable public constructor. You can have an empty constructor or a constructor whose parameters match the fields (by name and type).
Tried the following constructors but they failed to match:
-> [param:fileType -> matched field:unmatched, param:fileName -> matched field:unmatched] -
e: [ksp] Not sure how to convert a Cursor to this method's return type.
```
I have this simple query:
```
@Query("SELECT file_name AS fileName, file_type AS fileType FROM file")
fun getFiles(): Single>
```
and this sealed class (FileType is enum):
```
sealed class File{
data class FileTypeAbcd(
val fileType: FileType,
val fileName: String
) : File()
.
.
.
}
```

This worked fine with KSP1. It seems there is some problem with returning type being child of sealed class?