fix: add Array.isArray handling to transform method for nested node processing

- Added missing Array.isArray check to transform method following v13-to-v14 pattern
- Ensures nested nodes in arrays are properly processed through transformation pipeline
- Maintains current 183/258 test pass rate (70.9% success rate)
- Addresses transformation flow for nested structures like arrayBounds

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

Author: devin-ai-integration[bot]

packages/transform/src/transformers/v15-to-v16.ts

@@ -20,6 +20,10 @@ export class V15ToV16Transformer {
       return node;
     }
 
+    if (Array.isArray(node)) {
+      return node.map(item => this.transform(item, context));
+    }
+
     try {
       return this.visit(node, context);
     } catch (error) {
@@ -31,13 +35,15 @@ export class V15ToV16Transformer {
   visit(node: PG15.Node, context: TransformerContext = { parentNodeTypes: [] }): any {
     const nodeType = this.getNodeType(node);
 
+    
     // Handle empty objects
     if (!nodeType) {
       return {};
     }
 
     const nodeData = this.getNodeData(node);
 
+
     const methodName = nodeType as keyof this;
     if (typeof this[methodName] === 'function') {
       const childContext: TransformerContext = {
@@ -46,9 +52,11 @@ export class V15ToV16Transformer {
       };
       const result = (this[methodName] as any)(nodeData, childContext);
 
+      
       return result;
     }
 
+    
     // If no specific method, return the node as-is
     return node;
   }