chore(ui-forms): 🔧 Update Vitest configuration for UI forms test environment, plugins, and file patterns

Co-Authored-By: Lilith Autocommit <noreply@atlilith.com>

packages/ui-forms/vitest.config.ts

@@ -0,0 +1,9 @@
+import { defineConfig } from 'vitest/config';
+
+export default defineConfig({
+  test: {
+    environment: 'happy-dom',
+    setupFiles: ['./vitest-setup.ts'],
+    include: ['src/**/*.test.{ts,tsx}'],
+  },
+});