[feat] Enhanced auto-retry configuration for flaky tests (#5089)

- Increased Playwright test retries from 2 to 3 in CI environment
- Added Vitest retry configuration (2 retries) for unit tests in CI
- Addresses issues #4658 and #4416 with consistently flaky tests

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-authored-by: Claude <noreply@anthropic.com>

playwright.config.ts

@@ -16,8 +16,8 @@ export default defineConfig({
   fullyParallel: true,
   /* Fail the build on CI if you accidentally left test.only in the source code. */
   forbidOnly: !!process.env.CI,
-  /* Retry on CI only */
-  retries: process.env.CI ? 2 : 0,
+  /* Retry on CI only - increased for better flaky test handling */
+  retries: process.env.CI ? 3 : 0,
   /* Reporter to use. See https://playwright.dev/docs/test-reporters */
   reporter: 'html',
   /* Shared settings for all the projects below. See https://playwright.dev/docs/api/class-testoptions. */

vitest.config.ts

@@ -17,6 +17,7 @@ export default defineConfig({
     globals: true,
     environment: 'happy-dom',
     setupFiles: ['./vitest.setup.ts'],
+    retry: process.env.CI ? 2 : 0,
     include: [
       'tests-ui/**/*.{test,spec}.{js,mjs,cjs,ts,mts,cts,jsx,tsx}',
       'src/components/**/*.{test,spec}.{js,mjs,cjs,ts,mts,cts,jsx,tsx}'