case invalidation minor fix (only affects models_without_norm)

(cherry picked from commit 0b77085)

experiments/util/estimate.py

@@ -77,11 +77,13 @@ def skip_case_check(args: argparse.Namespace) -> bool:
     invalid = False
     if args.case is None:
         return invalid
+    is_surgical = 'surgical_last' in args.case or 'surgical_first' in args.case
+    # 1.
     for c in ["grad_norm_bias", "grad_norm_weights"]:
         if c in args.case and args.model in models.models_without_norm:
             invalid = True
     for c in ["no_grad_norm_bias", "no_grad_norm_weights"]:
-        if c not in args.case and args.model in models.models_without_norm:
+        if c not in args.case and args.model in models.models_without_norm and not is_surgical:
             invalid = True
     if invalid:
         if args.print: