clear selection state upon subset (#1655)

client/src/reducers/continuousSelection.js

@@ -3,6 +3,7 @@ import { makeContinuousDimensionName } from "../util/nameCreators";
 const ContinuousSelection = (state = {}, action) => {
   switch (action.type) {
     case "reset subset":
+    case "subset to selection":
     case "set clip quantiles": {
       return {};
     }

client/src/reducers/graphSelection.js

@@ -7,6 +7,7 @@ const GraphSelection = (
 ) => {
   switch (action.type) {
     case "set clip quantiles":
+    case "subset to selection":
     case "reset subset":
     case "set layout choice": {
       return {