fix for multiapi_combiner (Azure#37953)

Author: msyyc

tools/azure-sdk-tools/packaging_tools/multiapi_combiner.py

@@ -10,7 +10,7 @@
 import json
 import argparse
 from pathlib import Path
-from typing import Dict, Optional, List, Any, TypeVar, Callable, Set, TYPE_CHECKING
+from typing import Dict, Optional, List, Any, TypeVar, Callable, Set
 
 from jinja2 import PackageLoader, Environment
 
@@ -409,7 +409,7 @@ def _get_names_by_api_version(api_version: str):
         for m in models_and_enums:
             if hasattr(m.generated_class, "from_dict"):
                 self.models[m.name] = m
-            elif getattr(m, "__class__", None) == "azure.core._enum_meta.CaseInsensitiveEnumMeta":
+            elif m.name != "TYPE_CHECKING":
                 self.enums.append(m)
 
         self._sort_models()