Inline sparse-times-dense in-place multiplication

[dkarrasch]

Should fix #566.

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 1 line in your changes missing coverage. Please review.

Project coverage is 84.09%. Comparing base (313a04f) to head (ee24f1b).
Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
src/linalg.jl	66.66%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #567   +/-   ##
=======================================
  Coverage   84.09%   84.09%           
=======================================
  Files          12       12           
  Lines        9102     9102           
=======================================
  Hits         7654     7654           
  Misses       1448     1448           

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[dkarrasch]

Uff, I think this will need another (backport) PR onto the (currently non-existing) release-v1.11 branch.