[BUG] Incorrect java model classes generated for multi level hierarchy using discriminator

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator (example)?
• Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?
• [Optional] Sponsorship to speed up the bug fix or feature request (example)

Description

The models with JsonSubTypes annotations are not generated as expected.
Expected classes

@JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.EXISTING_PROPERTY, property = "object_type", visible = true)
@JsonSubTypes({
  @JsonSubTypes.Type(value = TessellSubObjDTO.class, name = "sub-obj"),
})
public class TessellBaseObjDTO {...}

@JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.EXISTING_PROPERTY, property = "sub_obj_type", visible = true)
@JsonSubTypes({
  @JsonSubTypes.Type(value = TessellDailySubObjDTO.class, name = "daily")
})
public class TessellSubObjDTO extends TessellBaseObjDTO {...}

public class TessellDailySubObjDTO extends TessellSubObjDTO {...}

Actual

@JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.EXISTING_PROPERTY, property = "object_type", visible = true)
@JsonSubTypes({
  @JsonSubTypes.Type(value = TessellDailySubObjDTO.class, name = "DailySubObj"),
  @JsonSubTypes.Type(value = TessellSubObjDTO.class, name = "SubObj"),
  @JsonSubTypes.Type(value = TessellDailySubObjDTO.class, name = "daily"),
  @JsonSubTypes.Type(value = TessellSubObjDTO.class, name = "sub-obj"),
})
public class TessellBaseObjDTO {...}

public class TessellSubObjDTO extends TessellBaseObjDTO {...}

public class TessellDailySubObjDTO extends TessellSubObjDTO {...}

openapi-generator version

5.2.1

OpenAPI declaration file content or url

spec link

Generation Details

Specific Config options:

• java8: true
• delegatePattern: true
• additionalModelTypeAnnotations: @lombok.experimental.SuperBuilder;@lombok.NoArgsConstructor;@lombok.AllArgsConstructor

Steps to reproduce

Using openapi-generator-maven-plugin (version : 5.2.1) to generate the code.

Related issues/PRs

3058

Start with the linked OpenAPI declaration and reproduce generation through the openapi-generator-maven-plugin using version 5.2.1 and the listed Java options. Inspect how the generator builds JsonSubTypes annotations for the multi-level discriminator hierarchy. Done means the generated classes match the expected separate discriminator annotations and subtype names.