tpv33 does not follow the "standard" folder structure

[davschneller]

Its solutions are in pre-computed; however for all others, they are in precomputed/${precision}. It would be good for it to follow the same folder structure so that it can be included in the CI without problems.

Also, the solution seems to diverge after about 8 seconds with single-precision: https://github.com/SeisSol/SeisSol/actions/runs/11169579580/job/31051115766

(with double, it works fine; but it, as expected, cannot find the precomputed solutions https://github.com/SeisSol/SeisSol/actions/runs/11169579580/job/31051117729 )