Revise the TVF in the packing system

[efaulhaber]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 9.43396% with 48 lines in your changes missing coverage. Please review.
✅ Project coverage is 71.40%. Comparing base (a724d36) to head (eaa2284).
⚠️ Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
src/preprocessing/particle_packing/system.jl	7.84%	47 Missing ⚠️
src/general/initial_condition.jl	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #887      +/-   ##
==========================================
+ Coverage   71.01%   71.40%   +0.39%     
==========================================
  Files         108      107       -1     
  Lines        7037     7005      -32     
==========================================
+ Hits         4997     5002       +5     
+ Misses       2040     2003      -37     

Flag	Coverage Δ
unit	71.40% <9.43%> (+0.39%)	⬆️

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