Enabled chunked transfers in LFS
LFS currently doesn't use chunked transfers (!30833 (comment 451658609)), which causes the whole body to be read before it is stored. This means 5+ GB uploads will be blocked by Cloudflare.
It looks like the LFS client looks for the Transfer-Encoding: chunked
header from the server in https://github.com/git-lfs/git-lfs/blob/19e217f6bc8ce0a14f19e3f6a43c8d7c6f54f426/tq/basic_upload.go#L62-L63 even though HTTP/1.1 says this isn't required.