Allowing FSDP strategy for hpu accelerator with strategy flag set

Signed-off-by: jyothi kumar sambolu <jsambolu@habana.ai>

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

@@ -460,6 +460,8 @@ def _check_strategy_and_fallback(self) -> None:
             if _habana_available_and_importable():
                 from lightning_habana import HPUAccelerator
                 if isinstance(self._accelerator_flag, HPUAccelerator):
+                    if strategy_flag:
+                        self._strategy_flag = strategy_flag
                     return
             raise MisconfigurationException(
                 f"You selected strategy to be `{FSDPStrategy.strategy_name}`, but GPU accelerator is not used."