Allow user to reset ui debugger after fatal error

Summary: Previously there was no way to get of this state

Reviewed By: aigoncharov

Differential Revision: D46803900

fbshipit-source-id: 2eb0eb41b58064659ef1d2cff245a2b8d7e2f261

desktop/plugins/public/ui-debugger/index.tsx

@@ -136,7 +136,16 @@ export function plugin(client: PluginClient<Events>) {
         error,
       );
 
-      uiState.streamState.set({state: 'UnrecoverableError'});
+      uiState.streamState.set({
+        state: 'FatalError',
+        error: error,
+        clearCallBack: async () => {
+          uiState.streamState.set({state: 'Ok'});
+          nodesAtom.set(new Map());
+          frameworkEvents.set(new Map());
+          snapshot.set(null);
+        },
+      });
     }
   }