Correct hstar being stored on data structure

[timothy-nunn]

I think hstar is being incorrectly set on the data structure in calculate_confinement_time. calculate_confinement_time is also called when creating the H-factor table for the OUT.DAT. I believe that the hstar from this is what was being written to the MFILE, not the hstar from the selected confinement scaling.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 40.00000% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 48.80%. Comparing base (e24884c) to head (22a9482).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
process/models/physics/confinement_time.py	40.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4396      +/-   ##
==========================================
- Coverage   48.84%   48.80%   -0.04%     
==========================================
  Files         151      151              
  Lines       29377    29348      -29     
==========================================
- Hits        14348    14323      -25     
+ Misses      15029    15025       -4     

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[chris-ashe]

Just really needs a way to be able to take the loss power terms from whatever equation is being used as the value is hardcoded for a single scaling at the moment

[chris-ashe]

This will only work for the selected scaling if the loss power index is (1-0.31), so really just the IPB98 scalings in this case

[timothy-nunn]

This will need to be turned into an issue. This PR is just stopping hstar being incorrectly set every time calculate_confinement_time is called