Fix module_available() crash when version metadata is missing#11422

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C1-BA-B1-F3 wants to merge 2 commits into

pydata:mainfrom

C1-BA-B1-F3:fix/issue-11344-module-available-none-version

Commits on Jun 26, 2026

Fix: collapse dimension for single nested tuple MultiIndex key
C1-BA-B1-F3
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Fix module_available() crash when importlib.metadata.version() returns None
Sisyphus
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