[BUG][SPRING CONTROLLER] Bug generating OneOf inside property of a schema generates broken class (OneOfObjectNameObjectName)

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
  YES
• Have you validated the input using an OpenAPI validator (example)?
  YES
• What's the version of OpenAPI Generator used?
  4.3.0 and swagger openapi: "3.0.0"
• Have you search for related issues/PRs?
  For example https://github.com/OpenAPITools/openapi-generator/issues/5730
• What's the actual output vs expected output?
  Actual: OneOfObjectAObjectB
  Expected: interface of these objects

I generate code by openapi-generator-maven-plugin 4.3.0 and in this situation:

MyObject:
      type: object
      properties:
        field:
          oneOf:
            - $ref: '#/components/schemas/ObjectA'
            - $ref: '#/components/schemas/ObjectB'

By <generatorName>spring</generatorName> get:

public class MyObject {
  @JsonProperty("field")
  private OneOfObjectAObjectB  field = null;
}

This class OneOfObjectAObjectB isn't created. mvn package failed.

BUT by <generatorName>java</generatorName> (pom.xml) get:

public class MyObject {
  @JsonProperty("field")
  private MyObjectFieldOneOf  field = null;
}

And this works for client! It creates interface MyObjectFieldOneOf for objects ObjectA and ObjectB that implement this created interface MyObjectFieldOneOf

I use spring and java generatorName for controllers and clients respectively. I tried all variants of configs in pom.xml to fixed this.

In earlier versions (than 4.3.0) generation models for client doesn't work. I glad that bug generation for client fixed in 4.3.0. We are waiting for spring controller correction :))))

Start with the minimal OpenAPI schema in the issue and compare the Spring and Java generator outputs for the nested oneOf property using version 4.3.0. Trace the Spring controller model-generation entry point and verify completion when the generated type is defined and mvn package succeeds.