add generation_config.json

model/v4/global_step_50/generation_config.json

@@ -0,0 +1,6 @@
+{
+  "_from_model_config": true,
+  "eos_token_id": 151645,
+  "pad_token_id": 151643,
+  "transformers_version": "4.57.1"
+}