fix: deepseepd_plugin retrieval from accelerate state (#3410)

Author: sayakpaul

examples/text_to_image/train_text_to_image.py

@@ -471,7 +471,7 @@ def deepspeed_zero_init_disabled_context_manager():
         """
         returns either a context list that includes one that will disable zero.Init or an empty context list
         """
-        deepspeed_plugin = AcceleratorState() if accelerate.state.is_initialized() else None
+        deepspeed_plugin = AcceleratorState().deepspeed_plugin if accelerate.state.is_initialized() else None
         if deepspeed_plugin is None:
             return []