chore: unified `script setup lang="ts"`

[shinGangan]

🔗 Linked issue

related nuxt-ui-pro/saas#46

❓ Type of change

• [ ] 📖 Documentation (updates to the documentation or readme)
• [ ] 🐞 Bug fix (a non-breaking change that fixes an issue)
• [ ] 👌 Enhancement (improving an existing functionality)
• [ ] ✨ New feature (a non-breaking change that adds functionality)
• [x] 🧹 Chore (updates to the build process or auxiliary tools and libraries)
• [ ] ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

Since <script setup lang="ts"> and <script lang="ts" setup> were mixed, we unified them to <script setup lang="ts">. Although it was a detailed correction, I thought it would be better to unify it.

[shinGangan]

Hi @benjamincanac , please review this too when you have a time 🙏

[benjamincanac]

Thanks! 😊