Remove line breaks from passwordless vcode entry instructions

[stevehobbsdev]

Changes

This PR updates several translation files to remove the line breaks for the code entry instructions. This particular string does not support HTML as it introduces a vulnerability where an attacker could inject malicious code to be executed when the string is shown. Thus, the line breaks are encoded and written to the screen.

References

Fixes #1973

Testing

• This change adds unit test coverage
• This change adds integration test coverage
• This change has been tested on the latest version of the platform/language

Checklist

• I have read the Auth0 general contribution guidelines
• I have read the Auth0 Code of Conduct
• All existing and new tests complete without errors
• All code quality tools/guidelines have been run/followed
• All relevant assets have been compiled
• All active GitHub checks have passed