Normalize kwarg spacing in loader.py after the main merge

Post-merge ruff-format-with-kwargs pass (the pre-commit.ci hook) on the merged
loader.py; whitespace only, no logic change.

unsloth/models/loader.py

@@ -245,6 +245,7 @@ def _maybe_advise_fla_install(model_types):
         "transformers will use a slower pure PyTorch path."
     )
 
+
 def _fix_rope_inv_freq(model):
     """Fix inv_freq corruption caused by transformers v5 meta-device loading.