Circular references in external documents create an infinite recursion

Describe the bug
Open api documents that contain circular references create an infinite recursion because each external document is loaded into a new root workspace rather than the initial document loader workspace.

OpenApi File To Reproduce
In order to reproduce, you need two files that reference each other. I've put a circular reference in the schemas section of the below specs (this is not the exact problem I'm seeing with real documents, but it's close enough to reproduce). The references are hard coded to a mount directory because I'm using kiota as a driver, so you may need to update the paths if you run against a different location.

pet.json
pets2.json

Expected behavior
I believe external documents should all be loaded into the same workspace for reference resolution.

Screenshots/Code Snippets

docker run --rm `
    -v "${PWD}\output:/app/output" `
    -v "${PWD}\specs:/app/specs" `
    -u root `
    mcr.microsoft.com/openapi/kiota generate --language csharp -n MyCode --openapi ./specs/pet.json --log-level trace

I have encountered the problem in open api documents from large enterprise software providers, so I've attached a patch file that contains my work around for an internal fork of the document loader libraries. Adding external documents to the root workspace created by the initial document load appears to resolve the problem, though I'm not sure if the external references are being resolved correctly.

This patch includes the changes I was required to make in order to resolve locally.
circular_ref.patch

使用提供的 Kiota Docker 命令和链接的 pet.json、pets2.json 文件重现递归，然后跟踪在解析引用期间外部文档如何加载到工作区中。将附加的 circular_ref.patch 与当前行为进行比较；当相互引用的外部文档能够在不发生无限递归的情况下完成解析，同时仍保留在预期的工作区中时，即表示完成。