Make minio package support legacy MD5 checksum (#23768)
A feedback from discord:
https://discord.com/channels/322538954119184384/561007778139734027/1090185427115319386
Some storages like:
* https://developers.cloudflare.com/r2/api/s3/api/
* https://www.backblaze.com/b2/docs/s3_compatible_api.html
They do not support "x-amz-checksum-algorithm" header
But minio recently uses that header with CRC32C by default. So we have
to tell minio to use legacy MD5 checksum.
I guess this needs to be backported because IIRC we 1.19 and 1.20 are
using similar minio package.
The minio package code for SendContentMD5 looks like this:
<details>
<img width="755" alt="image"
src="https://user-images.githubusercontent.com/2114189/228186768-4f2f6f67-62b9-4aee-9251-5af714ad9674.png">
</details>
