chore: update playground script

Author: sxzz

package.json

@@ -31,8 +31,7 @@
     "dev-sfc": "run-s dev-prepare-cjs dev-sfc-run",
     "dev-sfc-serve": "vite packages/sfc-playground --host",
     "dev-sfc-run": "run-p \"dev compiler-sfc -f esm-browser\" \"dev vue -if esm-bundler-runtime\" \"dev vue -ipf esm-browser-runtime\" \"dev server-renderer -if esm-bundler\" dev-sfc-serve",
-    "dev-vapor": "run-s dev-prepare-cjs dev-vapor-serve",
-    "dev-vapor-serve": "pnpm -C playground run dev",
+    "dev-vapor": "pnpm -C playground run dev",
     "serve": "serve",
     "open": "open http://localhost:3000/packages/template-explorer/local.html",
     "build-sfc-playground": "run-s build-all-cjs build-runtime-esm build-browser-esm build-ssr-esm build-sfc-playground-self",