Fix everest batch numbering (#9563)

src/ert/run_models/everest_run_model.py

@@ -682,18 +682,21 @@ def _slug(entity: str) -> str:
                     self._simulator_cache.add_simulation_results(
                         sim_idx, real_id, control_values, objectives, constraints
                     )
-        self.batch_id += 1
 
         # Note the negative sign for the objective results. Everest aims to do a
         # maximization, while the standard practice of minimizing is followed by
         # ropt. Therefore we will minimize the negative of the objectives:
-        return EvaluatorResult(
+        evaluator_result = EvaluatorResult(
             objectives=-objectives,
             constraints=constraints,
             batch_id=self.batch_id,
             evaluation_ids=sim_ids,
         )
 
+        self.batch_id += 1
+
+        return evaluator_result
+
     def send_snapshot_event(self, event: Event, iteration: int) -> None:
         super().send_snapshot_event(event, iteration)
         if type(event) in (EESnapshot, EESnapshotUpdate):