[BUG] [JAVA] Cannot use oneOf as query parameter

[lollol155]

Bug Report Checklist

• [x] Have you provided a full/minimal spec to reproduce the issue?
• [ ] 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?
• [ ] [Optional] Sponsorship to speed up the bug fix or feature request (example)

Description

openapi-generator version

7.6.0-SNAPSHOT

OpenAPI declaration file content or url

    parameters:
        name: myParameter
        in: query
        required: false
        schema:
          oneOf:
            - type: number
            - type: string

will result in name of openapi class as actual query parameter instead of my string or number

org.openapitools.client.model.myParameter

[wing328]

as a workaround, what about simplifying the schema to the following instead?

    parameters:
        name: myParameter
        in: query
        required: false
        schema:
          - type: string

as number and string make no difference in the query parameter in most cases.