[BUG] Description Enum constant name prefix has been stripped

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

When generating the enums client is acutally stripping the enum name.
I have two enum constant TEST_PACKAGE , TEST_RESULT_FILE.
But when openapi generating the yaml into java client it is stripping the TEST_ from name .

YAML FILE

FileType:
  type: string
  description: File type indicates test file or test run result
  enum:
    - TEST_PACKAGE
    - TEST_RESULT_FILE

generated output is

@JsonAdapter(FileType.Adapter.class)
public enum FileType {

PACKAGE("TEST_PACKAGE"),

RESULT_FILE("TEST_RESULT_FILE");
}

However expected output is

@JsonAdapter(FileType.Adapter.class)
public enum FileType {

TEST_PACKAGE("PACKAGE"),

TEST_RESULT_FILE("RESULT_FILE");

openapi-generator version

6.4.0

OpenAPI declaration file content or url

https://github.com/SUSHIL161/openapi/blob/main/openapi.yaml

Generation Details

Url of xml file

https://github.com/SUSHIL161/openapi/blob/main/openaapi.xml

org.openapitools openapi-generator-maven-plugin 6.4.0 generate ${project.basedir}/../openapi/target/classes/openapi.yaml java rest-assured ${project.build.directory}/generated-sources ${project.groupId}.sdk.api ${project.groupId}.sdk.models ${project.groupId}.sdk false false java8-localdatetime java CLIENT false false

Steps to reproduce

https://github.com/SUSHIL161/openapi/blob/main/openapi.yaml
generate java client from above file and check the model class FileType

Related issues/PRs

Suggest a fix

Start with the linked openapi.yaml and reproduce Java client generation using the Maven plugin configuration shown. Inspect the generated FileType model and the Java generator's enum naming path. Done means the generated constants match the expected TEST_PACKAGE and TEST_RESULT_FILE names, with the relevant regression covered by a test.