fix(ruby): prevent duplicate errors in undiscriminated union conversion

Return the already-converted result from the cloned context instead of
calling convert() again on the main context. This prevents duplicate
errors when the same conversion is performed twice.

Co-Authored-By: [email protected] <[email protected]>

Author: devin-ai-integration[bot]

generators/ruby-v2/dynamic-snippets/src/context/DynamicToLiteralMapper.ts

@@ -342,9 +342,10 @@ export class DynamicTypeLiteralMapper {
             const clonedContext = this.context.clone();
             const clonedMapper = new DynamicTypeLiteralMapper({ context: clonedContext });
             const result = clonedMapper.convert({ typeReference, value });
-            // If no errors were added, this type matched
+            // If no errors were added, this type matched - return the already-converted result
+            // to avoid duplicate errors from calling convert() again on the main context
             if (clonedContext.errors.empty()) {
-                return this.convert({ typeReference, value });
+                return result;
             }
         }
         this.context.errors.add({