Post to /api/records/{idv}/draft doesn't work on larger records

[tmorrell]

Package version (if known): v13

Describe the bug

The post endpoint /api/records/{idv}/draft fails when the user submits a record the beyond 126920 bytes and shifts to a chunk encoding. The response doesn't appear to be able to produce the chunks. The put and get endpoints don't exhibit this issue.

Steps to Reproduce

1. Create a large record (e.g. lots of creators)
2. Post the record to /api/records/{idv}/draft
3. In modern requests versions you'll get urllib3.exceptions.IncompleteRead: IncompleteRead and requests.exceptions.ChunkedEncodingError

Expected behavior

The post endpoint should work the same as the put endpoint

Screenshots (if applicable)

Additional context