Update vitest templates

ts-vitest/vite.config.ts

@@ -12,10 +12,10 @@ export default defineConfig({
   test: {
     environment: 'jsdom',
     globals: true,
-    transformMode: {
-      web: [/\.[jt]sx?$/],
-    },
-    setupFiles: './setupVitest.ts',
+    transformMode: { web: [/\.[jt]sx?$/] },
+    setupFiles: ['node_modules/@testing-library/jest-dom/extend-expect.js'],
+    // otherwise, solid would be loaded twice:
+    deps: { registerNodeLoader: true },
     // if you have few tests, try commenting one
     // or both out to improve performance:
     threads: false,