[BUG] [Java] [native] Missing support for arrays within deepObjects

[Reinhard-PTV]

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 java native client generation there has to be support for arrays within deepObjects.

openapi-generator version

5.4.0

OpenAPI declaration file content or url

openapi: 3.0.3
info:
  title: deepobject-arrays
  version: 1.0.0
paths:
  /test:
    get:
      operationId: test
      parameters:
        - name: options
          in: query
          required: false
          style: deepObject
          schema:
            $ref: '#/components/schemas/Options'
          explode: true
      responses:
        '200':
          description: OK
          content:
            text/plain:
              schema:
                type: string
components:
  schemas:
    Options:
      type: object
      properties:
        c:
          type: array
          items:
            type: string

Generation Details

Generate java client with native library.

Steps to reproduce

Related issues/PRs

Suggest a fix

Fix src/main/resources/Java/libraries/native/api.mustache to handle deepObject for arrays (cf. PR #11699)