Merge pull request #527 from Portkey-AI/fix/use-res-transformer-for-c…

…ached-stream-response

fix: pass response transformer type for cached stream response handler

src/handlers/handlerUtils.ts

@@ -610,7 +610,7 @@ export async function tryPost(
     fn
   ));
   if (!!cacheResponse) {
-    return createResponse(cacheResponse, undefined, true);
+    return createResponse(cacheResponse, fn, true);
   }
 
   // Prerequest validator (For virtual key budgets)