wip: fix typing dump_checkpoint

Author: matsumotosan

src/lightning/pytorch/trainer/connectors/checkpoint_connector.py

@@ -412,7 +412,7 @@ def _restore_modules_and_callbacks(
         self.restore_datamodule()
         self.restore_callbacks()
 
-    def dump_checkpoint(self, weights_only: bool = False) -> dict:
+    def dump_checkpoint(self, weights_only: Optional[bool] = None) -> dict:
         """Creating a model checkpoint dictionary object from various component states.
 
         Args:
@@ -450,6 +450,10 @@ def dump_checkpoint(self, weights_only: bool = False) -> dict:
             "loops": self._get_loops_state_dict(),
         }
 
+        if weights_only is None:
+            weights_only = False
+            log.info("`weights_only` was not set, defaulting to `False`.")
+
         if not weights_only:
             # dump callbacks
             checkpoint["callbacks"] = call._call_callbacks_state_dict(trainer)