Quill editor not validating on save if required

I have made custom plugin to change quill editor as default rich text editor but the issue is it is not validating on save or publish if required.

System Information
  • Strapi Version : 4.8.2
  • Operating System : Win11
  • Database: Postgresql
  • Node Version:v16.18.0
  • NPM Version: 9.6.2
  • Yarn Version: