[compare-model-performance] Model 1 and model 2 violinplot can be flipped

[SietsmaRJ]

Describe the bug

In the violinplots, model 2 (benign) can be shown before model 1 (benign) in the plot, causing confusion.

System information

• Version: 5.1.0
• Python version: 3.11.3
• Shell: ZSH

Expected behavior

Model 1 benign should always be shown first, then model 2 benign, then model 1 pathogenic, then model 2 pathogenic.

Screenshots

(see frameshift_variant)

Additional context

Potential solution: Add sort on "dataset source" on line 903