Forbid to run the code for an unsupported combination of options.
Description
The code does not support DFT+U together with TDFreezeOrbitals. So this is now forbidden.
News snippet
The code does not support DFT+U together with TDFreezeOrbitals.
Checklist
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I have checked that my code follows the Octopus coding standards -
I have added tests for all the new features added in this request.