Bugfix for TDFreezeOrbitals=sae.

Description

The number of charge was not adjusted when using TDFreezeOrbitals=sae.

News snippet

Bugfix that was presenting to use the option TDFreezeOrbitals=sae.

Checklist

• I have checked that my code follows the Octopus coding standards
• I have added tests for all the new features added in this request.