fix: trim the variable to avoid the effects of whitespace characters

Security/Services/AuthService.cs

@@ -175,7 +175,7 @@ public class AuthService(ICacheService cache, IAccessToken accessTokenService, I
     public async Task<TwoFactorAuthenticator> LoginAsync(CookieOptionsParameters cookieOptions, User user, HttpContext context, string password, string username, CancellationToken cancellation = default)
     {
         var requestContext = new RequestContextInfo(context, cookieOptions);
-
+        username = username.Trim();
         await VerifyUserOrThrowError(requestContext, user, password, username, cancellation);
 
         if (user.TwoFactorAuthenticator == TwoFactorAuthenticator.None)