[v11.0.x] User: add second migration for lowercasing login/email of users (#88917)

User: add second migration for lowercasing login/email of users (#88915)

(cherry picked from commit 39bd13f877)

Co-authored-by: Eric Leijonmarck <eric.leijonmarck@gmail.com>

pkg/services/user/userimpl/user.go

@@ -135,9 +135,9 @@ func (s *Service) Create(ctx context.Context, cmd *user.CreateUserCommand) (*use
 	// create user
 	usr := &user.User{
 		UID:              cmd.UID,
-		Email:            cmd.Email,
+		Email:            strings.ToLower(cmd.Email),
 		Name:             cmd.Name,
-		Login:            cmd.Login,
+		Login:            strings.ToLower(cmd.Login),
 		Company:          cmd.Company,
 		IsAdmin:          cmd.IsAdmin,
 		IsDisabled:       cmd.IsDisabled,