feat(idempotency): add custom idempotency key for middleware

Author: shdq

packages/idempotency/src/middleware/makeHandlerIdempotent.ts

@@ -117,15 +117,18 @@ const makeHandlerIdempotent = (
       ? options.config
       : new IdempotencyConfig({});
     const persistenceStore = options.persistenceStore;
+    const keyPrefix = options.keyPrefix;
     persistenceStore.configure({
       config: idempotencyConfig,
+      keyPrefix: keyPrefix,
     });
 
     const idempotencyHandler = new IdempotencyHandler({
       functionToMakeIdempotent: /* v8 ignore next */ () => ({}),
       functionArguments: [],
       idempotencyConfig,
       persistenceStore,
+      keyPrefix,
       functionPayloadToBeHashed: undefined,
     });
     setIdempotencyHandlerInRequestInternal(request, idempotencyHandler);