password change for former SAML user not working

### problem

As an admin I'm able to reset password for a regular user without problems.
If SAML has been enabled for that user this is no longer possible within CloudStack. Expected behavior.
Once I disable SAML for that user I would expect that I'm able to change the password again. That is not the case and the error below will appear.

### versions

ACS 4.20.1

### The steps to reproduce the bug

1. run all steps as admin
2. create a user
3. reset the password for that user
4. enable SAML (needs to be configured before) for this user
5. try to reset the password (will fail)
6. disable SAML for this user
7. try to reset the password (should work?) will fail
...

### What to do about it?

Enable the possibility to change the password for a former SAML user.

Reproduza o fluxo de redefinição de senha do administrador no CloudStack 4.20.1: crie um usuário, habilite o SAML, desabilite-o e tente a redefinição novamente. Rastreie o ponto de entrada da alteração de senha e o estado do SAML do usuário; considera-se concluído quando um administrador consegue redefinir a senha depois que o SAML é desabilitado, sem o erro relatado.

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