Macos rpath fix

[multiphaseCFD]

Context:

@loader_path instead of $ORIGIN would work for rpath setting from CMake in macos.

Description of the Change:

Benefits:

Possible Drawbacks:

Related GitHub Issues:

[sc-80803]

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 27.45%. Comparing base (4ddcdf2) to head (c2487b5).
Report is 1 commits behind head on master.

❗ There is a different number of reports uploaded between BASE (4ddcdf2) and HEAD (c2487b5). Click for more details.

HEAD has 1 upload less than BASE

Flag	BASE (4ddcdf2)	HEAD (c2487b5)
	7	6

Additional details and impacted files

@@             Coverage Diff             @@
##           master    #1029       +/-   ##
===========================================
- Coverage   94.34%   27.45%   -66.89%     
===========================================
  Files         233       29      -204     
  Lines       39003     2637    -36366     
===========================================
- Hits        36796      724    -36072     
+ Misses       2207     1913      -294     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[dime10]

I think this fixed the discovery of the library on macos, so let's merge it regardless 👍