Kiota has issues with changes to nullable rendering in OpenAPI v3 documents caused by OpenAPI.NET V2

[darrelmiller]

What are you generating using Kiota, clients or plugins?

API Client/SDK

In what context or format are you using Kiota?

Nuget tool

Client library/SDK language

Csharp

Describe the bug

See this issue microsoft/OpenAPI.NET#2342

Expected behavior

No issue

How to reproduce

Create nullable object with allOf in it.

Open API description file

No response

Kiota Version

See related issue

Latest Kiota version known to work for scenario above?(Not required)

No response

Known Workarounds

No response

Configuration

No response

Debug output

Click to expand log

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### Other information

_No response_

[baywet]

@darrelmiller after digging through the mentioned issue, it appears to only be an issue at serialization time. So are you saying this is impacting plugins generation here? or are we talking about something else?

[baywet]

After digging further and discussing through the OpenAPI.net issue, it does not seem to have any adverse effects on kiota directly. Closing for now due to lack of additional evidence.