fix(hierarchical): setPage 0 when toggling

Was an issue in the helper.

fixes #371

Author: vvo

npm-shrinkwrap.json

@@ -63,7 +63,7 @@
   },
   "dependencies": {
     "algoliasearch": "^3.9.0",
-    "algoliasearch-helper": "^2.6.3",
+    "algoliasearch-helper": "^2.6.4",
     "classnames": "^2.2.0",
     "events": "^1.1.0",
     "hogan.js": "^3.0.2",