Spec for collections inside polymorphic objects inside polymorphic objects are not generated correctly

[stijn-o-ispnext]

Describe the bug
I have a polymorphic object that has collection properties (List) that is used inside another polymorphic object. This results in the library generating stuff like:

 "$ref": "#/components/schemas/polymorphicClass/anyOf/0/properties/polymorphicClassThatIsAProperty/anyOf/8/properties/intList"

Instead of

"type": [
  "null",
  "array"
],
"items": {
  "type": "number",
  "format": "int32"
}

OpenApi File To Reproduce
I cannot share the file. Simply create this structure:

[JsonPolymorphic(TypeDiscriminatorPropertyName = "type")]
[JsonDerivedType(typeof(B), typeDiscriminator: "test")]
public abstract class A
{
    public C TestProperty { get; set; }
}

public class B : A
{
}

[JsonPolymorphic(TypeDiscriminatorPropertyName = "otherType")]
[JsonDerivedType(typeof(D), typeDiscriminator: "test1")]
public abstract class C
{
}

public class D : C
{
    public List<int> TestInts { get; set; }
}

Expected behavior
Correct array spec should be generated