feat: Add Pydantic validation to import_fail_info_bulk endpoint

- Regenerated Pydantic models from updated OpenAPI specification
- Updated import_fail_info_bulk route handler to use ImportFailInfoBulkRequest/Response models
- Replaced manual JSON validation with Pydantic model validation
- Added proper error handling with ValidationError
- Updated data_models/__init__.py to export new models

Following the process outlined in data_models/README.md for type safety and consistency.

comfyui_manager/data_models/__init__.py

@@ -30,6 +30,12 @@ from .generated_models import (
     InstalledModelInfo,
     ComfyUIVersionInfo,
     
+    # Import Fail Info Models
+    ImportFailInfoBulkRequest,
+    ImportFailInfoBulkResponse,
+    ImportFailInfoItem,
+    ImportFailInfoItem1,
+    
     # Other models
     OperationType,
     OperationResult,
@@ -88,6 +94,12 @@ __all__ = [
     "InstalledModelInfo",
     "ComfyUIVersionInfo",
     
+    # Import Fail Info Models
+    "ImportFailInfoBulkRequest",
+    "ImportFailInfoBulkResponse",
+    "ImportFailInfoItem",
+    "ImportFailInfoItem1",
+    
     # Other models
     "OperationType",
     "OperationResult",