multi: rename FetchLightningNode

to FetchNode

routing/router_test.go

@@ -2908,12 +2908,12 @@ func TestAddEdgeUnknownVertexes(t *testing.T) {
 	_, _, err = ctx.router.FindRoute(req)
 	require.NoError(t, err, "unable to find any routes")
 
-	copy1, err := ctx.graph.FetchLightningNode(ctxb, pub1)
+	copy1, err := ctx.graph.FetchNode(ctxb, pub1)
 	require.NoError(t, err, "unable to fetch node")
 
 	require.Equal(t, n1.Alias, copy1.Alias)
 
-	copy2, err := ctx.graph.FetchLightningNode(ctxb, pub2)
+	copy2, err := ctx.graph.FetchNode(ctxb, pub2)
 	require.NoError(t, err, "unable to fetch node")
 
 	require.Equal(t, n2.Alias, copy2.Alias)