Modify the fallback logic in receiveHelper to work even if we don't get errors...

Modify the fallback logic in receiveHelper to work even if we don't get errors like we expect from it

indexedDb/implementation.go

@@ -382,16 +382,21 @@ func (w *wasmModel) receiveHelper(newMessage *Message) (uint64,
 	err = txn.Await(ctx)
 	cancel()
 	if err != nil {
-		err = errors.Errorf("Upserting Message failed: %+v", err)
+		return 0, errors.Errorf("Upserting Message failed: %+v", err)
+	}
+	res, err := addReq.Result()
+	// NOTE: Sometimes the insert fails to return an error but hits
+	// a duplicate insert, so this fallthrough returns the uuid entry in
+	// that case.
+	if res.IsUndefined() {
 		msgID := cryptoChannel.MessageID{}
 		copy(msgID[:], newMessage.MessageID)
-		uuid, _ := w.msgIDLookup(msgID)
-		if uuid == 0 {
+		uuid, errLookup := w.msgIDLookup(msgID)
+		if uuid != 0 && errLookup == nil {
 			return uuid, nil
 		}
-		return 0, err
+		return 0, errors.Errorf("uuid lookup failure: %+v", err)
 	}
-	res, _ := addReq.Result()
 	uuid := uint64(res.Int())
 	jww.DEBUG.Printf(
 		"Successfully stored message from %s, id %d",