fix #5048

Former-commit-id: 71a6861667ae68c1fd6a69acf68e1359b858cf1b

src/llamafactory/extras/packages.py

@@ -70,6 +70,11 @@ def is_starlette_available():
     return _is_package_available("sse_starlette")
 
 
+@lru_cache
+def is_transformers_version_greater_than_4_43():
+    return _get_package_version("transformers") >= version.parse("4.43.0")
+
+
 def is_uvicorn_available():
     return _is_package_available("uvicorn")