core: invert BAL and TVM transition drivers

[Khoyo]

BAL-TVM300 actually means a signal with a TVM output, not a TVM input.

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 0% with 28 lines in your changes are missing coverage. Please review.

Project coverage is 27.97%. Comparing base (7dd26cf) to head (a613ded). Report is 4 commits behind head on dev.

Files	Patch %	Lines
...otlin/fr/sncf/osrd/signaling/tvm300/TVM300toBAL.kt	0.00%	16 Missing :warning:
...n/kotlin/fr/sncf/osrd/signaling/bal/BALtoTVM300.kt	0.00%	12 Missing :warning:

Additional details and impacted files

@@             Coverage Diff              @@
##                dev    #7125      +/-   ##
============================================
- Coverage     28.34%   27.97%   -0.37%     
  Complexity     2247     2247              
============================================
  Files          1095     1075      -20     
  Lines        137950   137057     -893     
  Branches       2761     2761              
============================================
- Hits          39100    38341     -759     
+ Misses        97250    97116     -134     
  Partials       1600     1600              

Flag	Coverage Δ
core	78.97% <0.00%> (ø)
editoast	72.85% <ø> (-0.04%)	:arrow_down:
front	8.97% <ø> (ø)
gateway	2.45% <ø> (ø)
railjson_generator	87.15% <ø> (ø)
tests	?

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