fix: proper relative url parsing

[cristipufu]

The previous implementation would not take query string params into consideration:

def _is_relative_url(self, url: str) -> bool:
        parsed = urlparse(url)
        print(f"url: {url}")
        print(f"parsed: {parsed}")
        return parsed.hostname is None and parsed.path == url

[2025-05-18 09:00:59,576][INFO] url: mcp/mcp/gmaps-hosted/runtime/abort?runtimeId=c370591f-a68e-4103-9e4b-d02341fa6a35
[2025-05-18 09:00:59,576][INFO] parsed: ParseResult(scheme='', netloc='', path='mcp_/mcp/gmaps-hosted/runtime/abort', params='', query='runtimeId=c370591f-a68e-4103-9e4b-d02341fa6a35', fragment='')
[2025-05-18 09:00:59,576][INFO] self._is_relative_url(url): self._is_relative_url(url)=False