[galabovaa]

Description

Improve find_package(highs) for HiPO with every BLAS route

Record the BLAS the build used in a generated highs-blas-dependency.cmake
instead of always calling find_dependency(BLAS), which failed for bundled
OpenBLAS and static vcpkg OpenBLAS. Link BLAS PRIVATE so consumers of the
shared extras library need no BLAS at configure time. Keep a user-supplied
BLAS_LIBRARIES for consumers of static extras.

Checklist

• I have read the contributing guidelines
• This PR targets the latest branch
• Tests are passing
• Documentation was updated where relevant
• This PR is not primarily AI-generated (per the AI contributions policy in CONTRIBUTING.md)

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 75.66%. Comparing base (372b34e) to head (899cc62).
⚠️ Report is 13 commits behind head on latest.

Additional details and impacted files

@@            Coverage Diff             @@
##           latest    #3567      +/-   ##
==========================================
- Coverage   75.66%   75.66%   -0.01%     
==========================================
  Files         461      461              
  Lines      113822   113823       +1     
  Branches    17914    17913       -1     
==========================================
- Hits        86129    86128       -1     
- Misses      27405    27407       +2     
  Partials      288      288              

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