fix(integration): add vite config to exclude clerk packages from esbuild optimization

esbuild (used by Vite's dependency optimizer) does not properly support nested
wildcard patterns in package exports like './internal/clerk-js/*'. When @clerk/ui
imports from these paths, esbuild fails to resolve them during bundling.

Excluding @clerk packages from optimizeDeps prevents Vite from trying to pre-bundle
them with esbuild. These packages are already pre-built and don't need optimization.

Author: nikosdouvlis

integration/templates/express-vite/vite.config.ts

@@ -0,0 +1,11 @@
+import { defineConfig } from 'vite';
+
+// https://vitejs.dev/config/
+export default defineConfig({
+  optimizeDeps: {
+    // Exclude Clerk packages from pre-bundling to avoid esbuild issues with
+    // nested wildcard exports like "@clerk/shared/internal/clerk-js/*"
+    // These packages are already pre-built and don't need optimization
+    exclude: ['@clerk/clerk-js', '@clerk/ui', '@clerk/shared'],
+  },
+});