[BUG][JAVA] OpenAPI 3.1.0: Wrong generation of Model-Classes when object has multiple object arrays

Description

In my API I have an object with two object arrays. When I generate the java classes the first list has the correct list type,
the second has the type "Object", which is wrong.

openapi-generator version

7.2.0

OpenAPI declaration file content or url

openapi: 3.1.0
info:
  title: Example
  version: 0.0.1
components:
  schemas:
    ParentObject:
      type: object
      properties:
        listOfChildren1:
          type: array
          items:
            $ref: '#/components/schemas/ChildObject'
        listOfChildren2:
          type: array
          items:
            $ref: '#/components/schemas/ChildObject'
        listOfChildren3:
          type: array
          items:
            $ref: '#/components/schemas/ChildObject'
    ChildObject:
      type: object
      properties:
        testProp:
          type: string

Generation Details

Classes are generated with openapi-generator generate -g java -i openapi3_1.yaml -o output

Steps to reproduce

Just generate the classes with the command above.

Suggest a fix

The properties of class "ParentObject" should be a list type, not an object.
This is what's being generated:

public class ParentObject {
  public static final String SERIALIZED_NAME_LIST_OF_CHILDREN1 = "listOfChildren1";
  @SerializedName(SERIALIZED_NAME_LIST_OF_CHILDREN1)
  private List<ChildObject> listOfChildren1;

  public static final String SERIALIZED_NAME_LIST_OF_CHILDREN2 = "listOfChildren2";
  @SerializedName(SERIALIZED_NAME_LIST_OF_CHILDREN2)
  private Object listOfChildren2 = null; //should be of type List<ChildObject>

  public static final String SERIALIZED_NAME_LIST_OF_CHILDREN3 = "listOfChildren3";
  @SerializedName(SERIALIZED_NAME_LIST_OF_CHILDREN3)
  private Object listOfChildren3 = null; //should be of type List<ChildObject>
  (...)

but it should be

public class ParentObject {
  public static final String SERIALIZED_NAME_LIST_OF_CHILDREN1 = "listOfChildren1";
  @SerializedName(SERIALIZED_NAME_LIST_OF_CHILDREN1)
  private List<ChildObject> listOfChildren1;

  public static final String SERIALIZED_NAME_LIST_OF_CHILDREN2 = "listOfChildren2";
  @SerializedName(SERIALIZED_NAME_LIST_OF_CHILDREN2)
  private List<ChildObject> listOfChildren2; //correct type

  public static final String SERIALIZED_NAME_LIST_OF_CHILDREN3 = "listOfChildren3";
  @SerializedName(SERIALIZED_NAME_LIST_OF_CHILDREN3)
  private List<ChildObject> listOfChildren3; //correct type
  (...)

of course with the right setter and getter methods as these from "listOfChildren1".

Start by running openapi-generator generate -g java -i openapi3_1.yaml -o output with the provided OpenAPI 3.1 schema and inspect the generated ParentObject class. Trace how the Java generator resolves the three array properties, then add a regression test showing that all are generated as List<ChildObject> with matching accessors.