LFS currently doesn't use chunked transfers, which causes the whole body
to be read before it is stored. This causes 5+ GB uploads to be blocked
by Cloudflare on GitLab.com.

The LFS client will only enable this mode if the server sends the
`Transfer-Encoding: chunked` HTTP header.

This is guarded by the `lfs_chunked_encoding` feature flag to ensure
this mode doesn't cause issues.

Relates to https://gitlab.com/gitlab-org/gitlab/-/issues/285489