[dashboard] align client registration

Author: AlexTugarev

components/dashboard/src/start/StartWorkspace.tsx

@@ -131,7 +131,13 @@ export default class StartWorkspace extends React.Component<StartWorkspaceProps,
         }
 
         try {
-            this.toDispose.push(getGitpodService().registerClient(this));
+            this.toDispose.push(
+                getGitpodService().registerClient({
+                    notifyDidOpenConnection: () => this.fetchWorkspaceInfo(undefined),
+                    onInstanceUpdate: (workspaceInstance: WorkspaceInstance) =>
+                        this.onInstanceUpdate(workspaceInstance),
+                }),
+            );
         } catch (error) {
             console.error(error);
             this.setState({ error });
@@ -297,10 +303,6 @@ export default class StartWorkspace extends React.Component<StartWorkspaceProps,
         this.setState({ ideOptions });
     }
 
-    notifyDidOpenConnection() {
-        this.fetchWorkspaceInfo(undefined);
-    }
-
     async onInstanceUpdate(workspaceInstance: WorkspaceInstance) {
         if (workspaceInstance.workspaceId !== this.props.workspaceId) {
             return;