Fix broken export functionality

Summary: This fixes a regression bug introduced by the rework sidebar selection: when trying to export a Flipper Trace flipper would error: 'No client exported' after making plugin selection

Reviewed By: priteshrnandgaonkar

Differential Revision: D18571143

fbshipit-source-id: c7a292e53cb79d0b2d95e09f8e9b041ae0d711cf

src/utils/exportData.tsx

@@ -469,7 +469,7 @@ export async function getStoreExport(
   const state = store.getState();
   const {clients} = state.connections;
   const client = clients.find(
-    client => client.query.app === state.connections.selectedApp,
+    client => client.id === state.connections.selectedApp,
   );
   const {pluginStates} = state;
   const {plugins} = state;