✨ Support CELLxGENE 7.0.0

[Zethson]

We simplify CELLxGENE integration by removing pinned ontology version support in favor of curating against latest versions.

In the future, we support users to

1. Validate with BioHub's cellxgene-schema tool
2. Then use LaminDB's CELLxGENE integration to ingest validated artifacts & register metadata

This is achieved by

• Remove pinned ontology version handling
• Fix behavior for pinned sources (not sure where it got lost - was already broken before 🚸 Broaden curation to dtypes that are unions #3516) & adding a test that always runs
• Simplify test suite using a Visium CELLxGENE dataset

Remaining TODOs

• update ontology versions on cxg
• Update guide

[sunnyosun]

You are unblocked via laminlabs/bionty#359.

[codecov]

Codecov Report

❌ Patch coverage is 95.00000% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 89.97%. Comparing base (aec1051) to head (507dfae).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
lamindb/examples/cellxgene/_cellxgene.py	94.59%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3466      +/-   ##
==========================================
- Coverage   90.48%   89.97%   -0.51%     
==========================================
  Files          94       86       -8     
  Lines       13711    13301     -410     
==========================================
- Hits        12406    11968     -438     
- Misses       1305     1333      +28     

Files with missing lines	Coverage Δ
lamindb/curators/__init__.py	100.00% <100.00%> (ø)
lamindb/curators/core.py	84.49% <100.00%> (-0.32%)	⬇️
lamindb/examples/cellxgene/_cellxgene.py	91.02% <94.59%> (-7.86%)	⬇️

... and 9 files with indirect coverage changes

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[github-actions]

Deployment URL: https://e70fbb45.lamindb.pages.dev