Add setup and postVisit hooks to test-runner config

Co-authored-by: hotlong <50353452+hotlong@users.noreply.github.com>

Author: Copilot

.storybook/test-runner.ts

@@ -1,6 +1,11 @@
 import type { TestRunnerConfig } from '@storybook/test-runner';
 
 const config: TestRunnerConfig = {
+  // Hook that is executed once before all tests
+  async setup() {
+    // Global setup if needed
+  },
+  
   // Hook that is executed before the test runner starts running tests
   async preVisit(page) {
     // Set up any global variables or configurations needed for tests
@@ -9,6 +14,11 @@ const config: TestRunnerConfig = {
       (window as any).__test = true;
     });
   },
+  
+  // Hook that is executed after the test runner finishes running tests  
+  async postVisit(page) {
+    // Clean up if needed
+  },
 };
 
 export default config;