CZI files' `var` count changd

[ilan-gold]

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• I have checked that this issue has not already been reported.
• I have confirmed this bug exists on the latest version of anndata.
• (optional) I have confirmed this bug exists on the master branch of anndata.

Report

See https://dev.azure.com/scverse/anndata/_build/results?buildId=6151&view=logs&j=5ea502cf-d418-510c-3b5f-c4ba606ae534&t=1938a971-054f-5f2e-194b-121646fdbe8a&l=319 for more info but if you have a dev environment and check your .pytest_cache folder for two files from CZI (0895c838-e550-48a3-a777-dbcd35d30272 file and the 08e94873-c2a6-4f7d-ab72-aeaff3e3f929), and then try to fetch them again, like here, you will see that the var count has changed. I am not sure if this is intended and/or should be reported to CZI.

Versions

N/A