[BUG] [KOTLIN] gradle task "generateOpenApiDocs" wrongly converts data class field names starting with substring "isIn" into OpenApiSpec.json

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

In our project, we are using Spring+Kotlin for our backend.
We auto-generate an OpenApiSpec.json based on our backend-API-code. We get it from "[baseUrlToOurBackend]/v3/api-docs".
I noticed a strange bug when I checked the auto-generated OpenApiSpec.json:

If I use a field name, that starts with "isIn" (for example "isInviteSuccessful" or "isInhouseProduction") inside of a Kotlin data class, which is used in the endpoints-code of my backend, then it appears with a different field name in the auto-generated OpenApiSpec.json:

Some actual examples I witnessed:

"isInviteSuccessful" in my Kotlin data class translates to "inviteSuccessful" in the auto-generated OpenApiSpec.json

"isOnDemand" in my Kotlin data class translates to "onDemand" in the auto-generated OpenApiSpec.json.

Therefore we started avoiding field names, that start with "is[A-Z]*".
However, we thought that this seems to be a bug and could be fixed in future releases.

openapi-generator version

We are using:

org.springframework.boot version 2.7.5
org.openapi.generator version 6.2.1
org.springdoc.openapi-gradle-plugin version 1.4.0
org.springdoc:springdoc-openapi-ui version 1.6.12

Steps to reproduce

This error is pretty simple to reproduce if you just use the openapi dependencies mentioned above:

1. Create a Kotlin data class, e.g. "SomeDataClass", and give it two String fields "fieldA" and "isInviteSuccessful".
2. Create e.g. a GET endpoint that receives an input of type "SomeDataClass".
3. Now if you run the gradle task "generateOpenApiDocs" and look into the generated OpenApiSpec.json (or just go to "[baseUrlToOurBackend]/v3/api-docs"), you'll see that the first field "fieldA" has its correct name in the "SomeDataClass" model, but the field "isInviteSuccessful" suddenly has the field name "inviteSuccessful".
   The "is[...]" was automatically dropped from the field name!

Since I'm not 100% sure where this topic belongs to, I will adress this issue also in the repo https://github.com/springdoc/springdoc-openapi/

The link is:
https://github.com/springdoc/springdoc-openapi/issues/2032

Start by reproducing the issue with the Kotlin data class and the Gradle task "generateOpenApiDocs", then compare the generated OpenApiSpec.json with the original field names. Review the related springdoc-openapi issue 2032 and determine whether the fix belongs there; done means fields such as "isInviteSuccessful" and "isOnDemand" retain their names in the generated schema.