MOFA: samples_names and samples_groups do not match if samples in AnnData are not sorted by group

[bv2]

Example:
Samples in AnnData are sample1_group1, sample2_group1, sample1_group2, sample2_group2, sample3_group2, sample3_group1.

Resulting mofa samples_groups and samples_names
modal.data_opts['samples_groups'] = ["group1", "group1", "group2", "group2", "group2", "group1"]
modal.data_opts['samples_names'] = [["sample1_group1", "sample2_group1", "sample3_group1"],
["sample1_group2", "sample2_group2", "sample3_group2"]]

As samples_groups are concatenated later in entry_point.py the correspondence of samples to groups is wrong.