[BUG][JAVA] AnyOf enum or format uuid yields invalid code

Bug Report Checklist

[x] Have you provided a full/minimal spec to reproduce the issue?
[x] Have you validated the input using an OpenAPI validator (example)?
[x] Have you tested with the latest master to confirm the issue still exists?
[x] Have you searched for related issues/PRs?
[x] What's the actual output vs expected output?
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Description

Using anyOf in combination with enum and format: uuid yields invalid code.

openapi-generator version

7.0.1

OpenAPI declaration file content or url

openapi: 3.1.0
info:
  version: 0.1.0
  title: ''
  description: ''
paths:
  /foo/:
    post:
      operationId: foo
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/Patch_Uuid'
        required: true
      responses:
        '200':
          content:
            application/json:
              schema:
                type: string
          description: ''
components:
  schemas:
    Patch_Uuid:
      anyOf:
      - type: string
        format: uuid
      - type: string
        enum:
        - delete

Generation Details

The generated PatchUuid.java contains:

public static void validateJsonElement(JsonElement jsonElement) throws IOException {
    // ...
    try {
        UUID.validateJsonElement(jsonElement);
        return;
    } catch (Exception e) {
        // ...
    }
    // ...
}

Because there is no such method validateJsonElement for class UUID, compilation fails. It should rather be sth like UUID.fromString(jsonElement.getAsString());

Steps to reproduce

Use the openapi-generator-maven-plugin to generate client code for okhttp-gson

OpenAPITools / openapi-generator

[BUG][JAVA] AnyOf enum or format uuid yields invalid code #16868