Add support for symlinked files (Azure-Samples#2180)

Author: charris-msft

app/frontend/vite.config.ts

@@ -4,6 +4,9 @@ import react from "@vitejs/plugin-react";
 // https://vitejs.dev/config/
 export default defineConfig({
     plugins: [react()],
+    resolve: {
+        preserveSymlinks: true
+    },
     build: {
         outDir: "../backend/static",
         emptyOutDir: true,