### 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_
# put 
        response = .put(url, data="content 123")
        # if w
        if not verify_signature and not is_aws_cloud():
            assert response.ok, f"response returned {response.status_code}: {response.text}"
            # resp
            assert not response.text
        else:
            assert response.status_code == 403
            exception = xmltodict.parse(response.content)
            snapshot.match("no-meta-headers", exception)
        # put 
        response = .put(url, data="content 123", headers={"x-amz-meta-foo": "bar"})
        # asse
        assert response.ok
        response = aws_client.s3.head_(Bucket=s3_bucket, Key=_key)
        assert response["Metadata"]["foo"] == "bar"
        snapshot.match("head_", response)
        # asse
        response = .put(url, data="content 123", headers={"x-amz-meta-wrong": "wrong"})
        # if w
        if not verify_signature and not is_aws_cloud():
            assert response.ok, f"response returned {response.status_code}: {response.text}"
        else:
            assert response.status_code == 403
            exception = xmltodict.parse(response.content)
            snapshot.match("wrong-meta-headers", exception)
        head_ = aws_client.s3.head_(Bucket=s3_bucket, Key=_key)
        if not verify_signature and not is_aws_cloud():
            assert head_["Metadata"]["wrong"] == "wrong"