portal: remove reactions that fail to be pre-handled

Signed-off-by: Sumner Evans <sumner.evans@automattic.com>

Author: sumnerevans

bridgev2/portal.go

@@ -1071,6 +1071,14 @@ func (portal *Portal) handleMatrixReaction(ctx context.Context, sender *UserLogi
 	if err != nil {
 		log.Err(err).Msg("Failed to pre-handle Matrix reaction")
 		portal.sendErrorStatus(ctx, evt, err)
+		_, err := sender.User.DoublePuppet(ctx).SendMessage(ctx, portal.MXID, event.EventRedaction, &event.Content{
+			Parsed: &event.RedactionEventContent{
+				Redacts: evt.ID,
+			},
+		}, nil)
+		if err != nil {
+			log.Err(err).Msg("Failed to remove errored reaction")
+		}
 		return
 	}
 	existing, err := portal.Bridge.DB.Reaction.GetByID(ctx, reactionTarget.ID, reactionTarget.PartID, preResp.SenderID, preResp.EmojiID)
@@ -1126,6 +1134,14 @@ func (portal *Portal) handleMatrixReaction(ctx context.Context, sender *UserLogi
 	if err != nil {
 		log.Err(err).Msg("Failed to handle Matrix reaction")
 		portal.sendErrorStatus(ctx, evt, err)
+		_, err := sender.User.DoublePuppet(ctx).SendMessage(ctx, portal.MXID, event.EventRedaction, &event.Content{
+			Parsed: &event.RedactionEventContent{
+				Redacts: evt.ID,
+			},
+		}, nil)
+		if err != nil {
+			log.Err(err).Msg("Failed to remove errored reaction")
+		}
 		return
 	}
 	if dbReaction == nil {