Move tree implementation out of collections store (#4763)

* refactor: attaching emoji in tree node is unnecessary

* refactor: pass depth and hasChildren as separate props

* refactor: move tree impl into a separate hook

* refactor: separate out as DocumentExplorer for reuse

* fix: separate search and node

* fix: review comments

* fix: tsc

app/scenes/Document/components/PublicBreadcrumb.tsx

@@ -1,6 +1,7 @@
 import * as React from "react";
+import { NavigationNode } from "@shared/types";
 import Breadcrumb from "~/components/Breadcrumb";
-import { MenuInternalLink, NavigationNode } from "~/types";
+import { MenuInternalLink } from "~/types";
 import { sharedDocumentPath } from "~/utils/routeHelpers";
 
 type Props = {