fix: preserve p2p topic for IM system notices

server/datamodel.go

@@ -863,6 +863,9 @@ type ServerComMessage struct {
 	// Session ID to skip when sendng packet to sessions. Used to skip sending to original session.
 	// Could be either empty.
 	SkipSid string `json:"-"`
+	// PreserveTopicName prevents p2p/channel topic aliasing for server-generated
+	// messages which are already using the API-visible topic name.
+	PreserveTopicName bool `json:"-"`
 	// User id affected by this message.
 	uid types.Uid
 }
@@ -874,14 +877,15 @@ func (src *ServerComMessage) copy() *ServerComMessage {
 		return nil
 	}
 	dst := &ServerComMessage{
-		TenantID:  src.TenantID,
-		Id:        src.Id,
-		RcptTo:    src.RcptTo,
-		AsUser:    src.AsUser,
-		Timestamp: src.Timestamp,
-		sess:      src.sess,
-		SkipSid:   src.SkipSid,
-		uid:       src.uid,
+		TenantID:          src.TenantID,
+		Id:                src.Id,
+		RcptTo:            src.RcptTo,
+		AsUser:            src.AsUser,
+		Timestamp:         src.Timestamp,
+		sess:              src.sess,
+		SkipSid:           src.SkipSid,
+		PreserveTopicName: src.PreserveTopicName,
+		uid:               src.uid,
 	}
 
 	dst.Ctrl = src.Ctrl.copy()