AS Conversion: BA with jump MP reduced to 0 count as non-jumping

[SJuliez]

DWP/ DMP can reduce jump MP to 0 which should make them list "f" (foot) as their movement type.

Raised in #3961

[codecov]

Codecov Report

Base: 22.95% // Head: 22.95% // Decreases project coverage by -0.00% ⚠️

Coverage data is based on head (56eed57) compared to base (7736c49).
Patch coverage: 0.00% of modified lines in pull request are covered.

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #4113      +/-   ##
============================================
- Coverage     22.95%   22.95%   -0.01%     
  Complexity     4817     4817              
============================================
  Files          2282     2282              
  Lines        250311   250315       +4     
  Branches      46367    46368       +1     
============================================
  Hits          57462    57462              
- Misses       191398   191402       +4     
  Partials       1451     1451              

Impacted Files	Coverage Δ
...on/alphaStrike/conversion/ASMovementConverter.java	0.00% <0.00%> (ø)
...gamek/src/megamek/client/ratgenerator/Ruleset.java	0.00% <0.00%> (ø)

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