Restore set TCP_NODELAY on TCP sockets

This reverts commit 74d5b95.

The issue wasn't Docker, but rather trying to set TCP properties on a
UDP socket, hence the additional condition in this version.

Author: pgjones

src/hypercorn/config.py

@@ -246,6 +246,10 @@ def _create_sockets(
                 except (ValueError, IndexError):
                     host, port = bind, 8000
                 sock = socket.socket(socket.AF_INET6 if ":" in host else socket.AF_INET, type_)
+
+                if type_ == socket.SOCK_STREAM:
+                    sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)
+
                 if self.workers > 1:
                     try:
                         sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEPORT, 1)