Description of problem:
get-object-attributes for multipart objects uploaded with SHA1 or SHA256 is returning FULL_OBJECT for ChecksumType instead of COMPOSITE


log snippet:

executing cmd: /usr/local/bin/aws --version
cmd excuted
aws-cli/2.24.24 Python/3.12.9 Linux/5.14.0-503.31.1.el9_5.x86_64 exe/x86_64.rhel.9

executing cmd: rhash --sha256 --base64 /home/cephuser/obj10MB
cmd excuted
9eAqpx5n9B15AjoSjKNbrYbPe2ZWlnv+CISzo8QyXq8=  /home/cephuser/obj10MB

multipart upload for obj1_aws_v2_disable_default_cksm_final_sha256_multi
executing cmd: /usr/local/bin/aws s3api create-multipart-upload --bucket bkt1 --key obj1_aws_v2_disable_default_cksm_final_sha256_multi --endpoint-url http://10.0.65.187:80 --checksum-algorithm sha256
cmd excuted
{
    "ChecksumAlgorithm": "SHA256",
    "Bucket": "bkt1",
    "Key": "obj1_aws_v2_disable_default_cksm_final_sha256_multi",
    "UploadId": "2~nyWoQlZnHn-HUXsE_KcwjHU_tWkx8Tv"
}

executing cmd: /usr/local/bin/aws s3api upload-part --bucket bkt1 --key obj1_aws_v2_disable_default_cksm_final_sha256_multi --endpoint-url http://10.0.65.187:80 --part-number 1 --upload-id 2~nyWoQlZnHn-HUXsE_KcwjHU_tWkx8Tv --body obj10MB.parts/aa --checksum-algorithm sha256
cmd excuted
{
    "ETag": "\"5f363e0e58a95f06cbe9bbc662c5dfb6\"",
    "ChecksumSHA256": "wDbLt1U6kJ+LiHfURhkkMH8n7LZs/5KO7q/VacOIfik="
}

executing cmd: /usr/local/bin/aws s3api upload-part --bucket bkt1 --key obj1_aws_v2_disable_default_cksm_final_sha256_multi --endpoint-url http://10.0.65.187:80 --part-number 2 --upload-id 2~nyWoQlZnHn-HUXsE_KcwjHU_tWkx8Tv --body obj10MB.parts/ab --checksum-algorithm sha256
cmd excuted
{
    "ETag": "\"443b86c26729f5f24407c7236957d653\"",
    "ChecksumSHA256": "g9U+0gkMfhDLyDKG67OYsRWxzSkTx4aX6fdzCgv3RZA="
}

executing cmd: /usr/local/bin/aws s3api complete-multipart-upload --bucket bkt1 --key obj1_aws_v2_disable_default_cksm_final_sha256_multi --endpoint-url http://10.0.65.187:80 --upload-id 2~nyWoQlZnHn-HUXsE_KcwjHU_tWkx8Tv --multipart-upload file://parts.json
cmd excuted
{
    "Location": "http://10.0.65.187/bkt1/obj1_aws_v2_disable_default_cksm_final_sha256_multi",
    "Bucket": "bkt1",
    "Key": "obj1_aws_v2_disable_default_cksm_final_sha256_multi",
    "ETag": "\"bf4ac386d613c42233666c89a2571b61-2\"",
    "ChecksumSHA256": "59+oOkjPZabANmlP9cAY5hT3KUr562wtpD2Phpxj7+Q="
}


executing cmd: /usr/local/bin/aws --endpoint-url http://10.0.65.187:80 s3api get-object-attributes --bucket bkt1 --key obj1_aws_v2_disable_default_cksm_final_sha256_multi --object-attributes checksum etag ObjectParts ObjectSize StorageClass
cmd excuted
{
    "LastModified": "2025-03-24T18:46:18+00:00",
    "ETag": "bf4ac386d613c42233666c89a2571b61-2",
    "Checksum": {
        "ChecksumSHA256": "59+oOkjPZabANmlP9cAY5hT3KUr562wtpD2Phpxj7+Q=",
        "ChecksumType": "FULL_OBJECT"
    },
    "ObjectParts": {
        "TotalPartsCount": 2,
        "IsTruncated": false,
        "Parts": [
            {
                "PartNumber": 1,
                "Size": 5242880,
                "ChecksumSHA256": "wDbLt1U6kJ+LiHfURhkkMH8n7LZs/5KO7q/VacOIfik="
            },
            {
                "PartNumber": 2,
                "Size": 4757120,
                "ChecksumSHA256": "g9U+0gkMfhDLyDKG67OYsRWxzSkTx4aX6fdzCgv3RZA="
            }
        ]
    },
    "StorageClass": "STANDARD",
    "ObjectSize": 10000000
}


Version-Release number of selected component (if applicable):
ceph version 19.2.0-120.el9cp

How reproducible:
always

Steps to Reproduce:
1.upload multipart object with checksum-algorithm sha1 or sha256
2.perform get-object-attributes of the above object, it returns checksum-type as FULL_OBJECT instead of composite
3.

Actual results:
get-object-attributes for multipart objects uploaded with SHA1 or SHA256 is returning FULL_OBJECT for ChecksumType instead of COMPOSITE

Expected results:
Expected get-object-attributes for multipart objects uploaded with SHA1 or SHA256 should return COMPOSITE for ChecksumType

Additional info: