AWS Transfer Family - SFTP File Listing issue

We are working on migrating SFTP from Azure to AWS and have come across the following issue. we are looking a solution from expertise

Requirement:

1. SFTP Users should not be permitted to create new folders/directories.
2. SFTP users should not be able list files in a directory, only write files.

Using the IAM policy provided below, we are able to achieve the first but not the second requirement.

If we uncomment out the statement for 'DenyListingObject', we are able to deny listing files but are not unable to upload. Do you know how we can get #2 to work?

SFTP user Policy:

policy = jsonencode({ Statement = [ { Sid = "AllowListingOfUserFolder", Action = [ "s3:ListBucket", "s3:GetBucketLocation" ] Effect = "Allow" Resource = "arn:aws:s3:::${var.sftp_bucket_name}" }, { Sid = "InboundDirObjectAccess", Action = [ "s3:PutObject", "s3:GetObject", "s3:DeleteObjectVersion", "s3:GetObjectVersion", ] Effect = "Allow" Resource = [ "arn:aws:s3:::${var.sftp_bucket_name}/*" ] },

    # {
    #     Sid = "DenyLisitingObject"
    #     Effect= "Deny",
    #     Action = [
    #         "s3:ListObject"
    #     ]
    #     Resource = "arn:aws:s3:::${var.sftp_bucket_name}/*/",
    #     Condition = {
    #         "StringLikeIfExists": {
    #             "s3:delimiter": ["/"]
    # }
    #     }

    #     },

 {
        Sid = "DenyCreattionFolder",
        Effect= "Deny",
        Action = "s3:PutObject",
        Resource= "arn:aws:s3:::${var.sftp_bucket_name}/*/",
        Condition = {
            "StringLikeIfExists": {
                "s3:delimiter": ["/"]
            }
        }
    }

]

}) }