[BUG] [Python Client] Python client is unable to resolve complex structure under AnyOf

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

Attempting to post data using python client results in a error when the data structure for the data in OpenAPI spec contains combination of complex structure and anyof data type.

openapi-generator version

7.6.0

OpenAPI declaration file content or url

https://gist.github.com/OptimeeringBigya/7130bdeb5ed6cdc474ee2d3c5897c1b4

Generation Details

java -jar openapi-generator-cli.jar generate
--input-spec ./test_openapi_json.json
--generator-name python
--output ./test_python_client

Steps to reproduce

1. Install venv
2. Using the venv, execute in python:

from test_python_client.openapi_client.api.default_api import DefaultApi
from test_python_client.openapi_client.models.data import Data

data = [
    {
        "prediction_for": "2024-06-25T09:33:46.556Z",
        "value": 0.1
    },
    {
        "prediction_for": "2024-06-25T09:33:46.556Z",
        "values": {"0.1": 0.1}
    },
    {
        "prediction_for": "2024-06-25T09:33:46.556Z",
        "values": {"N": 0.1}
    }
]
a = [Data.from_dict(i) for i in data]
print(a[0].to_dict())
print(a[1].to_dict())
print(a[2].to_dict())
response = DefaultApi().post_post(a)
print(response)

Related issues/PRs

https://github.com/OpenAPITools/openapi-generator/issues/16110

Start by reproducing the issue with test_openapi_json.json and the shown openapi-generator-cli command, then inspect the generated Data model, Data.from_dict, to_dict, and DefaultApi.post_post flow. Compare behavior with related issue #16110; done means the complex AnyOf structures in the example are resolved correctly and the generated Python client can post them without the reported error.