Fix Unbounded HVDC model for Copperplate

[rodrigomha]

Closes #1156

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 8 lines in your changes missing coverage. Please review.

Project coverage is 76.40%. Comparing base (2095cf1) to head (7002474).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
...s_models/device_constructors/branch_constructor.jl	0.00%	8 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1159      +/-   ##
==========================================
- Coverage   76.44%   76.40%   -0.05%     
==========================================
  Files         121      121              
  Lines       13082    13090       +8     
==========================================
  Hits        10001    10001              
- Misses       3081     3089       +8     

Flag	Coverage Δ
unittests	76.40% <0.00%> (-0.05%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
...s_models/device_constructors/branch_constructor.jl	77.87% <0.00%> (-1.89%)	⬇️

[github-actions]

Performance Results

Version	Precompile Time
Main	4.343728126
This Branch	4.334466012

Version	Build Time
Main-Build Time Precompile	63.770092196
Main-Build Time Postcompile	1.023832742
This Branch-Build Time Precompile	63.685154602
This Branch-Build Time Postcompile	1.082367823

Version	Solve Time
Main-Solve Time Precompile	1181.874252909
Main-Solve Time Postcompile	1149.965103891
This Branch-Solve Time Precompile	862.11565947
This Branch-Solve Time Postcompile	823.881712713

[jd-lara]

we need to add a test for this to avoid from it happening in the future.