freshen up the hpatches eval

[Parskatt]

Running

uv run experiments/eval_roma_outdoor.py

Gives reproduced results:

0 =0.45690579606209075
1 =0.6369895726401528
2 =0.7258865738276127
3 =0.779550519348575
4 =0.8143447600109477
5 =0.8386216326569257
6 =0.8566230317804007
7 =0.8707689503051904
8 =0.8821527645786703
9 =0.8915236950173551

Corresponds to 72.6 AUC@3px.