Add files field to packages (#7104)

Author: bluwy

packages/integrations/netlify/.npmignore

@@ -25,6 +25,9 @@
     "./netlify-edge-functions.js": "./dist/netlify-edge-functions.js",
     "./package.json": "./package.json"
   },
+  "files": [
+    "dist"
+  ],
   "scripts": {
     "build": "astro-scripts build \"src/**/*.ts\" && tsc",
     "build:ci": "astro-scripts build \"src/**/*.ts\"",