Create account - error messages not translate

[lawrencemcn]

Describe the bug
When creating an account, if you the password field and the confirm your password field are different the message displayed is created by concatenation of the fields name wich could be not well translate in other languages than english. And there are no keys to custom this error message in the yml file.
Same issue with the error message if you don't check the Tos agreement checkbox.

To Reproduce
Steps to reproduce the behavior:

1. Go to 'Sign up'
2. Fill your name, nickname, email
3. Fill different passwords in the password field and the confirm your password field
4. Don't check the Tos agreement checkbox
5. See error

Expected behavior
With a translation key in the yml for the Tos agreement not checked error and the password and confirmation password are not the same error, we will be able to customize the error message in any languages

Screenshots
Screenshots

Stacktrace
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Extra data (please complete the following information):

• Device: Desktop
• Device OS: Windows 10
• Browser: Chrome
• Decidim Version: 0.27.2 , .27.1 and try.decidim.org

Additional context
Add any other context about the problem here. For instance, add Metadecidim link.