### 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_
if os.environ.get("TEST_TARGET") == "AWS_CLOUD":
        return boto3.client("s3", config=conf, endpoint_url=endpoint_url)
    # TODO in future this should work with aws_stack.create_external_boto_client
    #      currently it doesn't as authenticate_presign_url_signv2 requires the secret_key to be 'test'
    # return aws_stack.create_external_boto_client(
    #     "s3",
    #     config=conf,
    #     endpoint_url=endpoint_url,
    #     aws_access_key_id=TEST_AWS_ACCESS_KEY_ID,
    # )
    return boto3.client(
        "s3",
        endpoint_url=endpoint_url,
        config=conf,
        aws_access_key_id=TEST_AWS_ACCESS_KEY_ID,
        aws_secret_access_key=TEST_AWS_SECRET_ACCESS_KEY,
    )
def _endpoint_url(region: str = "", localstack_host: str = None) -> str: