### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

When folder names contain a space then `listObjects` returns names without `/` at the end. Without space it works fine.

### Expected Behavior

Folders containing space in the name are returned with `/` at the end.

### How are you starting LocalStack?

With a `docker run` command

### Steps To Reproduce

awslocal s3api put-object --bucket bucket-name --key "folder name/"

awslocal s3api list-objects --bucket bucket-name
```
{
    "Contents": [
        {
            "Key": "folder name",
            "LastModified": "2023-12-11T10:15:20.000Z",
            "ETag": "\"d41d8cd98f00b204e9800998ecf8427e\"",
            "Size": 0,
            "StorageClass": "STANDARD",
            "Owner": {
                "DisplayName": "webfile",
                "ID": "75aa57f09aa0c8caeab4f8c24e99d10f8e7faeebf76c078efc7c6caea54ba06a"
            }
        }
    ],
    "RequestCharged": null
}
```


### Environment

```markdown
- OS: Linux Mint 21.2
- LocalStack: localstack/localstack:3.0
```


### Anything else?

_No response_
aws_client.s3.put_(Bucket=s3_bucket, Key=src_key, Body="something")
        # copy 
        dest_key = "dest"
        response = aws_client.s3.copy_(
            Bucket=s3_bucket,
            CopySource={"Bucket": s3_bucket, "Key": src_key},
            Key=dest_key,
        )
        snapshot.match("copy-obj", response)
        presigned_client = _s3_client_custom_config(
            Config(signature_version="s3v4", s3={"payload_signing_enabled": True}),
            endpoint_url=_endpoint_url(),
        )
        # Crea
        dest_key2 = "dest"
        url = presigned_client.generate_presigned_url(
            "copy_",
            Params={
                "Bucket": s3_bucket,
                "CopySource": {"Bucket": s3_bucket, "Key": src_key},
                "Key": dest_key2,
            },
        )
        request_response = .put(
            url, headers={"x-amz-copy-source": f"{s3_bucket}/{src_key}"}, verify=False
        )
        assert request_response.status_code == 200
    @markers.aws.only_localstack
    @pytest.mark.parametrize("case_sensitive_headers", [True, False])
    def test_s3_get_response_case_sensitive_headers(