fix worker tests

packages/rpc/test/RpcWorker.test.ts

@@ -2,6 +2,7 @@
 import "@vitest/web-worker"
 
 import * as BrowserWorker from "@effect/platform-browser/BrowserWorker"
+import { RpcServer } from "@effect/rpc"
 import * as RpcClient from "@effect/rpc/RpcClient"
 import { describe } from "@effect/vitest"
 import { Layer } from "effect"
@@ -11,7 +12,10 @@ import { UsersClient } from "./fixtures/schemas.js"
 describe("RpcWorker", () => {
   const WorkerClient = UsersClient.layer.pipe(
     Layer.provide(RpcClient.layerProtocolWorker({ size: 1 })),
-    Layer.provide(BrowserWorker.layerPlatform(() => new Worker(new URL("./fixtures/worker.ts", import.meta.url))))
+    Layer.provide(BrowserWorker.layerPlatform(() => new Worker(new URL("./fixtures/worker.ts", import.meta.url)))),
+    Layer.merge(Layer.succeed(RpcServer.Protocol, {
+      supportsAck: true
+    } as any))
   )
   e2eSuite("e2e worker", WorkerClient)
 })