[BUG][JAVA] properties which readOnly: true

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 importing openapi schema definition information about readOnly: true properties are not propagated properly. I would expect to import schema model and reuse it same way.

openapi-generator version

7.11.0

7.11.0

OpenAPI declaration file content or url

https://gist.github.com/narciarz/4aa97ab4314e23ae616ebee235f9876b

Generation Details

Steps to reproduce

Scenario:

1. Importing openapi definition via openapi-generator cli or maven plugin
2. POJOs created ( lacking information about readOnly)
3. Import POJOs inside java app, created some crud using those models
4. Expose APIs within POJOs
5. Generate for example swagger-ui using spring / springdoc library
6. Looking on req field which supossed to be readOnly (my case "id") is not. Inside resp all were available so it's ok.

Related issues/PRs

Suggest a fix

using JacksonAnnotation it will be sufficient to add access = JsonProperty.Access.READ_ONLY on getter or above such field. Currently there is annotation such:
@JsonProperty(JSON_PROPERTY_FIELDNAME)

Start with the linked OpenAPI declaration and reproduce the issue through the Java generator CLI or Maven plugin. Inspect the generated POJO's Jackson annotations, especially the existing @JsonProperty output. Done means a readOnly property such as "id" remains marked read-only when the generated models are used to expose the API and generate Swagger UI.