fix: handle the bug of wrong dag_parant index (#996)

* fix the dag_parant_index bug caused by the wrong calling order of

* auto-lint

rdagent/scenarios/data_science/loop.py

@@ -222,7 +222,6 @@ class DataScienceRDLoop(RDLoop):
         e = prev_out.get(self.EXCEPTION_KEY, None)
         if e is None:
             exp = prev_out["running"]
-            self.trace.hist.append((exp, prev_out["feedback"]))
 
             # NOTE: we put below  operations on selections here, instead of out of the if-else block,
             # to fit the corner case that the trace will be reset
@@ -232,8 +231,16 @@ class DataScienceRDLoop(RDLoop):
                 self.trace.set_current_selection(exp.local_selection)
             self.trace.sync_dag_parent_and_hist()
 
+            self.trace.hist.append((exp, prev_out["feedback"]))
+
         else:
             exp: DSExperiment = prev_out["direct_exp_gen"] if isinstance(e, CoderError) else prev_out["coding"]
+
+            # set the local selection to the trace as global selection, then set the DAG parent for the trace
+            if exp.local_selection is not None:
+                self.trace.set_current_selection(exp.local_selection)
+            self.trace.sync_dag_parent_and_hist()
+
             self.trace.hist.append(
                 (
                     exp,
@@ -241,11 +248,6 @@ class DataScienceRDLoop(RDLoop):
                 )
             )
 
-            # set the local selection to the trace as global selection, then set the DAG parent for the trace
-            if exp.local_selection is not None:
-                self.trace.set_current_selection(exp.local_selection)
-            self.trace.sync_dag_parent_and_hist()
-
             if self.trace.sota_experiment() is None:
                 if DS_RD_SETTING.coder_on_whole_pipeline:
                     #  check if feedback is not generated