[BUG] [Doc:AsciiDoc] double quotes cannot be fully unescaped

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

Double quotation marks in description fields of parameters for API methods get html escaped to ". When using {{{description}}} in the corresponding .mustache file to disable escaping, the double quotation marks are output as ".

openapi-generator version

openapi-generator version 6.2.1

OpenAPI declaration file content or url

Generation Details

The openapi.yaml file contains the unescaped quotation marks. When generating the .adoc files using the asciidoc configuration of the generator, the quotation marks get escaped.

Steps to reproduce

Prepare API-method annotations for documentation generation with double quotation marks in the description -> execute the documentation generation
A custom .mustache file can be configured to produce both forms of escaping, as mentioned above.

Related issues/PRs

https://github.com/OpenAPITools/openapi-generator/issues/11349
https://github.com/OpenAPITools/openapi-generator/issues/9324
These two issues describe the same behaviour, but the only fix still results in the quotation marks being escaped with backslash " which is not optimal.

Suggest a fix

Some clean workaround or way to configure the generator to not escape the quotation marks in any way.

Thanks for helping in advance!

No source file or test is named. Start by tracing AsciiDoc documentation generation and the escaping path for parameter descriptions, then compare the behavior described in issues 11349 and 9324. Done means double quotation marks are emitted without HTML escaping or backslash escaping, including when custom .mustache templates are used.