Tighten dispatch for summation rules

[wouterwln]

StaticArrays broke in this place, and additionally you cannot call gemv! with mixed float type (for example Float32 and Float64). New tests test this behaviour at least for out interface

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 75.60%. Comparing base (62682b0) to head (078b827).
Report is 39 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #492      +/-   ##
==========================================
+ Coverage   75.50%   75.60%   +0.09%     
==========================================
  Files         200      202       +2     
  Lines        5986     6013      +27     
==========================================
+ Hits         4520     4546      +26     
- Misses       1466     1467       +1     

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[bvdmitri]

nice catch