refine gc for new_executor (#35764)

* refine gc for new_executor, test=develop

* refine, test=develop

* refine, test=develop

* merge, test=develop

paddle/fluid/framework/new_executor/interpretercore.cc

@@ -385,6 +385,10 @@ void InterpreterCore::CheckGC(size_t instr_id,
         !var_scope.vec_meta_info_[var_id].vardesc_->Persistable()) {
       gc_.Add(var_scope.var_list[var_id], gc_event_[instr_id],
               vec_instruction_[instr_id].dev_ctx_);
+    } else if (is_ready &&
+               var_scope.vec_meta_info_[var_id].vardesc_ == nullptr) {
+      gc_.Add(var_scope.var_list[var_id], gc_event_[instr_id],
+              vec_instruction_[instr_id].dev_ctx_);
     }
   }
 }