fix: proxy-groups filter logic

adapter/outbound/socks5.go

@@ -22,7 +22,6 @@ type Socks5 struct {
 	skipCertVerify bool
 	tlsConfig      *tls.Config
 }
-
 type Socks5Option struct {
 	BasicOption
 	Name           string `proxy:"name"`
@@ -35,6 +34,10 @@ type Socks5Option struct {
 	SkipCertVerify bool   `proxy:"skip-cert-verify,omitempty"`
 }
 
+func (ss *Socks5) IsProxyGroup() bool {
+	return false
+}
+
 // StreamConn implements C.ProxyAdapter
 func (ss *Socks5) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
 	if ss.tls {