fix(ui): pre-optimize @peculiar/x509 and reflect-metadata for vitest browser

The Azure certificate generator (PROWLER-2378) imports @peculiar/x509 and
reflect-metadata. Without them in vitest.config.ts optimizeDeps.include,
Vite discovered them the first time a component test loaded the cert
generator lazily and emitted "optimized dependencies changed. reloading"
mid-run. That reload races with Playwright's route handlers on the
integration project, surfacing as "Unhandled Rejection: There was an
error when mocking a module" and taking down the whole run in CI.

Pre-bundling both packages up front removes the mid-run reload — verified
by clearing node_modules/.vite and rerunning the previously-failing
providers-page.integration.test.tsx: 62/62 pass with no reload warning.

ui/vitest.config.ts

@@ -106,6 +106,13 @@ export default defineConfig(() => {
         "vitest-browser-react",
         "msw/browser",
 
+        // Azure certificate generator (PROWLER-2378). Vite would otherwise
+        // discover these two on first import inside a component test, which
+        // triggers a mid-run "optimized dependencies changed. reloading" and
+        // races with Playwright's route handlers.
+        "@peculiar/x509",
+        "reflect-metadata",
+
         // React runtime (pre-bundle so a cold run doesn't re-optimize and
         // reload mid-test — see the on-demand-reload note above).
         "react-dom/client",