Restore Preferences' NetworkTableInstance before calling aitForListenerQueue()

Author: kcooney

testing/src/main/java/com/team2813/lib2813/testing/junit/jupiter/IsolatedNetworkTablesExtension.java

@@ -67,6 +67,8 @@ private void restoreNetworkTableInstance(ExtensionContext context) {
     Store store = context.getStore(NAMESPACE);
     Data data = DATA_KEY.remove(store);
     if (data != null) {
+      Preferences.setNetworkTableInstance(data.prevInstance);
+
       // Clear out the listener queue before destroying our temporary NetworkTableInstance.
       //
       // This works around a race condition in WPILib where a listener registered by Preferences can
@@ -77,8 +79,6 @@ private void restoreNetworkTableInstance(ExtensionContext context) {
             "Timed out waiting for the NetworkTableInstance listener queue to empty (waited 500ms);"
                 + " JVM may crash");
       }
-
-      Preferences.setNetworkTableInstance(data.prevInstance);
       data.testInstance.close();
     }
   }