Redesign resource tree (#1865)

* start redesign work

* add left padding to all tree nodes

* fiddling with padding

* align tab bar line with first item in resource tree

* final touch ups

* fix a strange password manager autofill prompt

* add keyboard shortcuts

* revert testing change

* nudge messagebar to layout row height

* tidy up

* switch to Allotment to stop ResizeObserver issues with monaco

* refmt and fix lints

* fabric touch-ups

* update snapshots

* remove explicit react-icons dependency

* reinstall packages

* remove background from FluentProvider

* fix alignment of message bar

* undo temporary workaround

* restore refresh button

* fix e2e tests and reformat

* fix compiler error

* remove uiw/react-split

* uncomment selection change on expand

src/Explorer/Explorer.tsx

@@ -393,16 +393,16 @@ export default class Explorer {
     return true;
   };
 
-  public onRefreshResourcesClick = (): void => {
+  public onRefreshResourcesClick = async (): Promise<void> => {
     if (configContext.platform === Platform.Fabric) {
       scheduleRefreshDatabaseResourceToken(true).then(() => this.refreshAllDatabases());
       return;
     }
 
-    userContext.authType === AuthType.ResourceToken
+    await (userContext.authType === AuthType.ResourceToken
       ? this.refreshDatabaseForResourceToken()
-      : this.refreshAllDatabases();
-    this.refreshNotebookList();
+      : this.refreshAllDatabases());
+    await this.refreshNotebookList();
   };
 
   // Facade