Bugfix: the dielectric function utility was not working for dimensions lower than 3.
Description
Bugfix: the dielectric function utility was not working for dimensions lower than 3.
News snippet
Bugfix: the dielectric function utility was not working for dimensions lower than 3.
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.