test: readd watch

Author: bashmish

packages/dev-server-rollup/package.json

@@ -25,7 +25,8 @@
     "node": ">=22.0.0"
   },
   "scripts": {
-    "test:node": "node --experimental-strip-types --test --test-force-exit 'test/node/**/*.test.ts'"
+    "test:node": "node --experimental-strip-types --test --test-force-exit 'test/node/**/*.test.ts'",
+    "test:watch": "node --experimental-strip-types --test --test-force-exit --watch 'test/node/**/*.test.ts'"
   },
   "files": [
     "*.d.ts",