Rename files

ts/util/getMockServerPort.dom.ts

@@ -0,0 +1,9 @@
+// Copyright 2024 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
+export function getMockServerPort(
+  serverUrl = window.SignalContext.config.serverUrl
+): string {
+  const url = new URL(serverUrl);
+  return url.port;
+}