tools/bilateralize: Ensure that historical new capacity is translated

[junukitashepard]

For flow technologies (e.g., pipelines) historical new capacity was not being translated because of a naming error.

PR checklist

• Continuous integration checks all ✅

[codecov]

Codecov Report

❌ Patch coverage is 0% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 74.2%. Comparing base (8e13506) to head (e6093e7).

Files with missing lines	Patch %	Lines
...e_ix_models/tools/bilateralize/bare_to_scenario.py	0.0%	3 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##            main    #533     +/-   ##
=======================================
- Coverage   74.2%   74.2%   -0.1%     
=======================================
  Files        320     320             
  Lines      25655   25656      +1     
=======================================
  Hits       19047   19047             
- Misses      6608    6609      +1     

Files with missing lines	Coverage Δ
...e_ix_models/tools/bilateralize/bare_to_scenario.py	67.6% <0.0%> (-0.5%)	⬇️

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[khaeru]

For this PR and the 3 others opened after it, please note this section of our contributing guidelines per the "PR checklist" part of the description template.