Apply --app-name to web page titles (#7794)

test/e2e/appName.test.ts

@@ -0,0 +1,9 @@
+import { version } from "../../src/node/constants"
+import { describe, test, expect } from "./baseFixture"
+
+const appName = "testnäme"
+describe("--app-name", [`--app-name=${appName}`], {}, () => {
+  test("should use app-name for the title", async ({ codeServerPage }) => {
+    expect(await codeServerPage.page.title()).toContain(appName)
+  })
+})