Resolve "Password incorrect message missing after logout"

What does this MR do?

After logging out, the "password incorrect" message would not show due to an incorrect URL (/login?logout=true?error=true). Consecutive incorrect attempts resulted in ?error=true accumulating in the URL.

Actions taken to fix the bug

Instead of simply appending ?error=true to the URL, the error query parameter is now replaced. This prevents it from occurring multiple times and ensures correct query syntax.

Does this MR meet the acceptance criteria?

• I have added tests to validate the fix.
• I have updated the documentation accordingly.
• I have added translations for all new client-side text.