### 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_
node = [node]
        return super(RestXMLRequestParser, self)._parse_list(request, shade, uri_params)
    def _node_tag(self, node: ETree.Element) -> str:
        return self._namespace_re.sub("", node.tag)
    @staticmethod
    def _member_key_name(shape: Shape, member_name: str) -> str:
        # This method is needed because we have to special case flattened list
        # with a serialization name.  If this is the case we use the
        # locationName from the list's member shape as the key name for the
        # surrounding structure.
        ened"):
            t("name")
            if list_member_serialized_name is not None:
                return list_member_serialized_name
        serialized_name = shape.serialization.get("name")
        if serialized_name is not None:
            return serialized_name
        return member_name
    @staticmethod
    def _parse_xml_string_to_dom(xml_string: str) -> ETree.Element:
        try:
            parser = ETree.XMLParser(target=ETree.TreeBuilder())
            parser.feed(xml_string)
            root = parser.close()
        except ETree.ParseError as e:
            raise ProtocolParserError(
                "Unable to parse re received:\n%s" % (e, xml_string)
            ) from e
        return root
    def _build_name_to_xml_node(self, parent_node: Union[list, ETree.Element]) -> dict: