fix: proxy-groups filter logic

adapter/outbound/vless.go

@@ -59,6 +59,10 @@ type VlessOption struct {
 	ServerName     string            `proxy:"servername,omitempty"`
 }
 
+func (v *Vless) IsProxyGroup() bool {
+	return false
+}
+
 func (v *Vless) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
 	var err error
 	switch v.option.Network {