Inconsistent behavior with S3-compatible

[apexdodge]

After upgrading the AWS S3 nuget package, we have inconsistent behavior with uploads:

We should test against both Cloudflare R2 and MinIO.

• [x] Uploads server to server for R2
• [x] Browser to R2 w/ uppy
• [x] Server to server for MinIO
• [x] Browser for MinIO w/ uppy

Ensure it does not break AzureBlob

[apexdodge]

I created a mini tool that tests uploads to Cloudflare R2, MinIO, and Azure Blob, for both direct from browser and server to server. To get all 6 scenarios working seamlessly was more annoying than I anticipated.

Next task is to refactor the corresponding code in Raytha.