Fix `--seed` for `pantools pangenome_structure`
We noticed that the pipeline inconsistently worked and didn't work for pantools pangenome_structure
. Diving into the code, this has to do with the genome list that was unsorted and dependend on the order in which neo4j obtained accession nodes from the graph. Since this behaviour cannot be set with a seed, we opted to simply sort the genome list to make it consistent.