multi: let ForEachNodeChannel take a reset param

discovery/gossiper.go

@@ -1758,6 +1758,9 @@ func (d *AuthenticatedGossiper) retransmitStaleAnns(ctx context.Context,
 		}
 
 		return nil
+	}, func() {
+		havePublicChannels = false
+		edgesToUpdate = nil
 	})
 	if err != nil && !errors.Is(err, graphdb.ErrGraphNoEdgesFound) {
 		return fmt.Errorf("unable to retrieve outgoing channels: %w",

discovery/gossiper_test.go

@@ -213,7 +213,7 @@ func (r *mockGraphSource) ForEachNode(
 
 func (r *mockGraphSource) ForAllOutgoingChannels(_ context.Context,
 	cb func(i *models.ChannelEdgeInfo,
-		c *models.ChannelEdgePolicy) error) error {
+		c *models.ChannelEdgePolicy) error, _ func()) error {
 
 	r.mu.Lock()
 	defer r.mu.Unlock()
@@ -3728,10 +3728,8 @@ out:
 		})
 
 		return nil
-	})
-	if err != nil {
-		t.Fatal(err)
-	}
+	}, func() {})
+	require.NoError(t, err)
 
 	err = ctx.gossiper.PropagateChanPolicyUpdate(edgesToUpdate)
 	require.NoError(t, err, "unable to chan policies")