### 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_
self, s3_bucket, snapshot, aws_client, presigned_snapshot_transformers
    ):
        # pres
        _key = "test-presigned-post-key"
        presigned_request = aws_client.s3.generate_presigned_post(
            Bucket=s3_bucket, Key=_key, ExpiresIn=2
        )
        # slee
        time.sleep(3)
        # atte
        response = .post(
            presigned_request["url"],
            data=presigned_request["fields"],
            files={"file": "file content"},
            verify=False,
        )
        exception = xmltodict.parse(response.content)
        exception["StatusCode"] = response.status_code
        snapshot.match("exception", exception)
        assert response.status_code in [400, 403]
    @markers.aws.validated
    @pytest.mark.parametrize(
        "signature_version",
        ["s3", "s3v4"],
    )
    def test_post_request_malformed_policy(