fix: determine species from gene file, not from gene prefix

[joyceyan]

Reason for Change

it seems like the issue with RR prefixed genes with fruit fly was a bit of a patchwork solution to a slightly bigger problem, which is that inferring organism species based on gene id prefix is not entirely correct. see this issue with a gorilla gene prefixed with ENSGGOG gets incorrectly mapped to homo sapiens

Changes

• updates implementation of gencode.get_organism_from_feature_id to go through each individual gene checker, rather than rely on gene prefix

Testing

• updates a test in test_gencode to assert that we're mapping the organism from feature id correctly

Notes for Reviewer

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.88%. Comparing base (3107d81) to head (ca6f1c3).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1253      +/-   ##
==========================================
+ Coverage   89.64%   89.88%   +0.23%     
==========================================
  Files          19       19              
  Lines        2222     2194      -28     
==========================================
- Hits         1992     1972      -20     
+ Misses        230      222       -8     

Components	Coverage Δ
cellxgene_schema_cli	90.83% <100.00%> (+0.34%)	⬆️
migration_assistant	91.26% <ø> (ø)
schema_bump_dry_run_genes	79.74% <ø> (ø)
schema_bump_dry_run_ontologies	99.53% <ø> (ø)

[Bento007]

that's a nice fix.