Don't leave rejection unhandled if node fetching fails

Summary: Fix potentially unhandled promise rejection in Layout inspector. Not really reproducible, and probably originating from old Flipper versions (no trace is available either), since we have a lot of connection check in place. Just in case still handled the exception, for example if something goes wrong on client side

Reviewed By: passy

Differential Revision: D31267465

fbshipit-source-id: d1b384db7bb010af8d2aa12ae29110f343fb14af

desktop/plugins/public/layout/index.tsx

@@ -110,7 +110,12 @@ export default class LayoutPlugin extends FlipperPlugin<
         callClient,
         'getNodes',
         supportsMethod,
-      );
+      ).catch((e) => {
+        console.error(
+          `[Layout] Failed to fetch Nodes from app while creating export`,
+          e,
+        );
+      });
     }
     const AXelements: ElementMap = {};
     if (rootAXElement) {