Refactors SCMF UHF code

[maxnus]

This is to reduce code duplication in the UHF versions of SCMF, which now calls the RHF update twice.

Together with #133 this addresses #132 for the UHF case

[codecov]

Codecov Report

Patch coverage: 80.95% and project coverage change: -0.05% ⚠️

Comparison is base (56248bb) 71.58% compared to head (dbb970f) 71.53%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #134      +/-   ##
==========================================
- Coverage   71.58%   71.53%   -0.05%     
==========================================
  Files         152      152              
  Lines       20194    20152      -42     
  Branches     3336     3343       +7     
==========================================
- Hits        14455    14415      -40     
+ Misses       4909     4904       -5     
- Partials      830      833       +3     

Files Changed	Coverage Δ
vayesta/core/scmf/brueckner.py	81.81% <75.00%> (ø)
vayesta/core/scmf/pdmet.py	73.13% <86.20%> (-8.45%)	⬇️
vayesta/core/scmf/scmf.py	91.56% <100.00%> (ø)

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[abhishekkhedkar09]

I tested, and both #133 and this one fixed the issue and passed the regression test. we can merge!