Add test to dominoes for uniform reversing

[monsterkrampe]

Also see here and here.

I came across a student's solution that would essentially only check that any numbers for two adjacent dominoes match. In essence that means that a domino can be used reversed and unreversed at the same time. The solution still had a special handling for the singleton case, which is why it was not caught by the singleton domino test already present.
This test invalidates such a solution.

Feedback on this PR is much appreciated :)

[github-actions]

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