Handle failed metafield creation with context

Enhances error handling for metafield creation failures.

Author: gianlukk994

lib/shopify_toolkit/metafield_statements.rb

@@ -23,7 +23,17 @@ def create_metafield(owner_type, key, type, namespace: :custom, name:, **options
 
     # Process validations to convert metaobject types to GIDs (only for metaobject reference fields)
     if options[:validations] && is_metaobject_reference_type?(type)
-      options[:validations] = convert_validations_types_to_gids(options[:validations])
+      begin
+        options[:validations] = convert_validations_types_to_gids(options[:validations])
+      rescue RuntimeError => e
+        if e.message.include?("not found")
+          say "ERROR: Cannot create metafield #{namespace}:#{key} - references non-existent metaobject. This suggests the metaobject was filtered out or failed to create."
+          say "       Original error: #{e.message}"
+          return
+        else
+          raise e
+        end
+      end
     end
 
     # Skip creation if metafield already exists