Re-add assertions.

Author: kinyoklion

packages/common_client/test/data_sources/data_source_event_handler_test.dart

@@ -46,6 +46,12 @@ void main() {
               '"variation":0,"trackEvents":false}'
               '}');
 
+      final bob = flagManager!.get('HasBob')!.flag!;
+      expect(bob.version, 11);
+      expect(bob.detail.value, LDValue.ofBool(false));
+      expect(bob.detail.variationIndex, 1);
+      expect(bob.detail.reason, isNull);
+
       final killSwitch = flagManager!.get('killswitch')!.flag!;
       expect(killSwitch.version, 10);
       expect(killSwitch.detail.value, LDValue.ofBool(true));