Commit 0522ae8 added inline DNS resolution (PreferGo: true) in Resolve(),
resolving domain names to IPs before routing. This caused the SOCKS5
connector to send CONNECT with ATYP=IPv4 instead of ATYP=domain, breaking
chains where the backend (e.g., ssh -D) cannot reach the gost-resolved IP.
Revert the DNS fallback in Resolve() — return the address unchanged so
the original hostname flows through the proxy chain. Instead, add
net.Resolver{PreferGo: true} to the TCP dialer in internal/net/dialer,
which resolves DNS at the point of actual TCP connection — still pure
Go (no cgo thread exhaustion) but after the proxy chain routing is done.
Also rename resovle.go → resolve.go (fix typo).
Fixesgo-gost/gost#877
ginuerzh