Bugfixes for MGGAs with vtau.
Description
Bugfixes for MGGAs with vtau.
- The phase was not applied properly before computing the divergence.
- For the calculation of the energy, the ghost points were not updated properly.
News snippet
Bugfixes for MGGAs with vtau.
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.