### 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="mykey", Body=body)
        response = aws_client.s3.get_(Bucket=s3_bucket, Key="mykey")
        snapshot.match("get-", response)
        response = aws_client.s3.copy_(
            Bucket=s3_bucket,
            CopySource=f"{s3_bucket}/mykey",
            Key="copiedkey",
            BucketKeyEnabled=True,
            SSEKMSKeyId=key_id,
            ServerSideEncryption="aws:kms",
        )
        snapshot.match("copy-", response)
        response = aws_client.s3.get_(Bucket=s3_bucket, Key="copiedkey")
        snapshot.match("get-copied-", response)
    @markers.aws.validated
    def test_region_header_exists(self, s3_create_bucket, snapshot, aws_client):
        snapshot.add_transformer(snapshot.transform.s3_api())
        bucket_name = s3_create_bucket(
            CreateBucketConfiguration={"LocationConstraint": "eu-west-1"},
        )
        response = aws_client.s3.head_bucket(Bucket=bucket_name)
        assert response["ResponseMetadata"]["HTTPHeaders"]["x-amz-bucket-region"] == "eu-west-1"
        snapshot.match("head_bucket", response)
        response = aws_client.s3.list_s_v2(Bucket=bucket_name)
        assert response["ResponseMetadata"]["HTTPHeaders"]["x-amz-bucket-region"] == "eu-west-1"
        snapshot.match("list_s_v2", response)
    @markers.aws.validated
    
    @markers.snapshot.skip_snapshot_verify(paths=["$..Prefix", "$..list-buckets.Buckets"])
    def test_delete_bucket_with_content(self, s3_bucket, s3_empty_bucket, snapshot, aws_client):