chore: move seeding to onInit and remove redundant seed script

payload.config.ts

@@ -21,11 +21,17 @@ import { Posts } from './src/payload/collections/Posts';
 import { FormSubmissions } from './src/payload/collections/FormSubmissions';
 import { Products } from './src/payload/collections/Products';
 import { Pages } from './src/payload/collections/Pages';
+import { seedDatabase } from './src/payload/seed';
 
 const filename = fileURLToPath(import.meta.url);
 const dirname = path.dirname(filename);
 
 export default buildConfig({
+  onInit: async (payload) => {
+    if (process.env.NODE_ENV === 'production') {
+      await seedDatabase(payload);
+    }
+  },
   admin: {
     user: Users.slug,
     importMap: {