Ensure compilation works with dealii distributed vectors

[blaisb]

Description

Compilation with deal.II distributed vectors did not work anymore because of an addition in the CHN equation. This has been fixed. To ensure that this does not happen again I have added a CI step to test LDV compilation. This is a first step in removing Trilinos Vectors from Lethe.

FYI @peterrum

Code related list:

• All in-code documentation related to this PR is up to date (Doxygen format)
• Lethe documentation is up to date
• Fix has unit test(s) (preferred) or application test(s), and restart files are in the generator folder
• The branch is rebased onto master
• Changelog (CHANGELOG.md) is up to date
• Code is indented with indent-all and .prm files (examples and tests) with prm-indent

Pull request related list:

• Labels are applied
• There are at least 2 reviewers (or 1 if small feature) excluding the responsible for the merge
• If this PR closes an issue or is related to a project, it is linked in the "Projects" or "Development" section
• If the fix is temporary, an issue is opened
• The PR description is cleaned and ready for merge