test(extensions): reset fake timers before tests

(cherry picked from commit 97dde19577)

test/setup.extensions.ts

@@ -1,8 +1,12 @@
-import { afterAll } from "vitest";
+import { afterAll, beforeEach, vi } from "vitest";
 import { installSharedTestSetup } from "./setup.shared.js";
 
 const testEnv = installSharedTestSetup({ loadProfileEnv: false });
 
+beforeEach(() => {
+  vi.useRealTimers();
+});
+
 afterAll(() => {
   testEnv.cleanup();
 });