[FIX] tools: Avoid to delete translation for website

- If default language of website is not en_US then it's
  translation will be lose after upgrade as till now we are
  considering en_US as a default language for all the records.

- In this commit, we have added translation for website which
  is having different default language.

Opw: 3186741, 3418725
Part-of: odoo/odoo#129518