test: harden onboarding/discord/telegram test setup

src/discord/monitor.tool-result.accepts-guild-messages-mentionpatterns-match.test.ts

@@ -36,6 +36,7 @@ vi.mock("../config/sessions.js", async (importOriginal) => {
 });
 
 beforeEach(() => {
+  vi.useRealTimers();
   sendMock.mockReset().mockResolvedValue(undefined);
   updateLastRouteMock.mockReset();
   dispatchMock.mockReset().mockImplementation(async ({ dispatcher }) => {

src/telegram/bot.media.downloads-media-file-path-no-file-download.test.ts

@@ -21,6 +21,7 @@ const apiStub: ApiStub = {
 };
 
 beforeEach(() => {
+  vi.useRealTimers();
   resetInboundDedupe();
 });