Both houses have rules which, they say, "over rule the Constitution".
The vote was illegal so it should be declared “invalid”. Someone should appeal to the Supreme Court.
Each House may determine the Rules of its Proceedings, punish its Members for disorderly Behaviour, and, with the Concurrence of two thirds, expel a Member.
If the House wishes to allow proxy voting, it’s not reviewable by the courts, the House has the sole authority over it’s rules.