fix: correct target path mapping

Author: sk-portkey

src/handlers/handlerUtils.ts

@@ -771,15 +771,14 @@ export async function tryTargetsRecursively(
     case StrategyModes.FALLBACK:
       for (const [index, target] of currentTarget.targets.entries()) {
         const originalIndex = target.originalIndex || index;
-        currentJsonPath = `${currentJsonPath}.targets[${originalIndex}]`;
         response = await tryTargetsRecursively(
           c,
           target,
           request,
           requestHeaders,
           fn,
           method,
-          currentJsonPath,
+          `${currentJsonPath}.targets[${originalIndex}]`,
           currentInheritedConfig
         );
         if (response?.headers.get('x-portkey-gateway-exception') === 'true') {