If unreachable hostname and port pair is specified in Deno.connect, it can't be canceled until it times out with OS Error.

const conn = await Deno.connect({ hostname: "104.20.22.46", port: 50000 });
// This times out with os error 60 in about 75 sec on mac os.

This situation is inconvenient for some of the node.js compat unit test cases (for example, a case in tests/node_compat/test/parallel/test-net-autoselectfamily.js connects to the above server and the above hang happens, which wastes about 1 min before the connection is closed from the server (See #26661))