fix: add List transformation method to enable proper traversal of nested FunctionParameter nodes

- Added List transformation method to handle List.items properly
- This enables FunctionParameter mode transformation (FUNC_PARAM_IN -> FUNC_PARAM_DEFAULT) to work correctly
- Fixed TypeScript error with explicit type annotation for map callback
- Test results: 151 failed, 107 passed (improved from 155 failed, 103 passed)

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

Author: devin-ai-integration[bot]

packages/transform/src/transformers/v13-to-v14.ts

@@ -1057,4 +1057,16 @@ export class V13ToV14Transformer {
 
     return { Null: result };
   }
+
+  List(node: any, context: TransformerContext): any {
+    const result: any = {};
+    
+    if (node.items !== undefined) {
+      result.items = Array.isArray(node.items)
+        ? node.items.map((item: any) => this.transform(item as any, context))
+        : this.transform(node.items as any, context);
+    }
+    
+    return { List: result };
+  }
 }