[BlockSparseArrays] Allow more general axes

[mtfishman]

No description provided.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 76.41%. Comparing base (e08e131) to head (42978ca).
Report is 2 commits behind head on main.

❗ Current head 42978ca differs from pull request most recent head ac72a72

Please upload reports for the commit ac72a72 to get more accurate results.

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Additional details and impacted files

@@             Coverage Diff             @@
##             main    #1467       +/-   ##
===========================================
+ Coverage   43.65%   76.41%   +32.76%     
===========================================
  Files         136      148       +12     
  Lines        8806     9638      +832     
===========================================
+ Hits         3844     7365     +3521     
+ Misses       4962     2273     -2689     

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