test(common): make EMA schema fixture valid

Author: OutisLi

source/tests/common/test_argcheck_training.py

@@ -9,7 +9,9 @@
 def test_ema_checkpoint_retention_is_left_for_runtime_inheritance() -> None:
     training_argument = training_args()
 
-    normalized = training_argument.normalize_value({"max_ckpt_keep": 7})
+    normalized = training_argument.normalize_value(
+        {"numb_steps": 1, "max_ckpt_keep": 7}
+    )
     training_argument.check_value(normalized, strict=True)
 
     assert normalized["ema_ckpt_keep"] is None