Expose MessagePort class for Undici v7

UI/tests/common/jest-setup.js

@@ -8,10 +8,10 @@ import {
     afterEach
 } from "@jest/globals";
 import "core-js";
+import { server } from "./mocks/server.js";
 import { setGlobalOrigin } from "undici";
 
 import "./mocks/lsmb_elements";
-import { server } from "./mocks/server.js";
 
 Object.defineProperty(window, "lsmbConfig", {
     writable: true,

UI/tests/common/mocks/server.js

@@ -1,7 +1,14 @@
 /** @format */
+/* global globalThis */
 
 import { setupServer } from "msw/node";
 import { handlers } from "./handlers";
+const { MessageChannel, MessagePort } = require("node:worker_threads");
 
 // This configures a Service Server with the given request handlers.
 export const server = setupServer(...handlers);
+
+Object.defineProperties(globalThis, {
+    MessageChannel: { value: MessageChannel },
+    MessagePort: { value: MessagePort }
+});