feat: merge in multi species work from Q4 2024/experimental validator

[joyceyan]

Reason for Change

https://czi.atlassian.net/browse/VC-1959

Changes

• merges in all the commits from the q4-2024/experimental-validator branch into main, and rebases based on some changes that have occurred due to divergence
• this relies on COG 1.4.1

Testing

• tests were updated based on some divergences that occurred between main and q4-2024/experimental-validator
• note that there are 6 tests that are marked as skipped for now. these are visium tests with the new species. i believe that this PR: feat: cellxgene-schema must update validation for X (Matrix Layers) for descendants of Visium #1133 introduced some new validation that our test fixtures need to account for.
• since this PR is blocking further work for both of us, i think it makes sense to just merge this PR in as is, and patch those tests separately

Notes for Reviewer

[codecov]

Codecov Report

Attention: Patch coverage is 80.00000% with 10 lines in your changes missing coverage. Please review.

Project coverage is 89.73%. Comparing base (d67f0f2) to head (a11cbf3).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1199      +/-   ##
==========================================
- Coverage   89.89%   89.73%   -0.17%     
==========================================
  Files          18       19       +1     
  Lines        2098     2143      +45     
==========================================
+ Hits         1886     1923      +37     
- Misses        212      220       +8     

Components	Coverage Δ
cellxgene_schema_cli	90.64% <79.16%> (-0.27%)	⬇️
migration_assistant	91.26% <ø> (ø)
schema_bump_dry_run_genes	79.80% <100.00%> (ø)
schema_bump_dry_run_ontologies	99.53% <ø> (ø)