fix Julia v1.13 support

[vtjnash]

Reverts the breaking part of the changes from #78, while keeping the
tweaks. This should be more compatible with future lazy library updates
to MKL_jll avoiding further future breakage, hopefully.

[codecov]

Codecov Report

❌ Patch coverage is 66.66667% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 45.31%. Comparing base (01de2fd) to head (d8f9815).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
src/Pardiso.jl	57.14%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #124      +/-   ##
==========================================
+ Coverage   45.20%   45.31%   +0.11%     
==========================================
  Files           4        4              
  Lines         469      470       +1     
==========================================
+ Hits          212      213       +1     
  Misses        257      257              

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[vtjnash]

Explicitly this is not a String and is explicitly expected to be untyped, please remove your commit before merging my PR

[vtjnash]

If you want to do this correctly and strongly-typed later, after this PR, it should just be import MKL_jll: libmkl_rt and delete all of the random LOCAL_MKL_FOUND and MKL_LOAD_FAILED and __init__ stuff that makes builds non-reproducible and potentially rather buggy (that stuff is supposed to be handled by the user with Artifact preferences, to ensure builds are (re)generated correctly for distribution.)

[KristofferC]

What type is it then :).

And yes, the code here was written a long long time ago.