修改了 torch_driver.load_model，添加了 strict 参数的设定

fastNLP/core/drivers/torch_driver/torch_driver.py

@@ -199,7 +199,8 @@ class TorchDriver(Driver):
                                      f"`only_state_dict=False`")
         if not isinstance(res, dict):
             res = res.state_dict()
-        model.load_state_dict(res)
+        _strict = kwargs.get("strict", True)
+        model.load_state_dict(res, _strict)
 
     @rank_zero_call
     def save_checkpoint(self, folder: Path, states: Dict, dataloader, only_state_dict: bool = True, should_save_model: bool = True, **kwargs):