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 命令和連結的 pet.json、pets2.json 檔案重現遞迴，然後追蹤在解析參照期間外部文件如何載入工作區。將附加的 circular_ref.patch 與目前的行為進行比較；當相互參照的外部文件能夠在不發生無限遞迴的情況下完成解析，同時仍保留在預期的工作區中時，即表示完成。