Corrected Morale Logic and Contract Type Checks

[IllianiCBT]

• Simplified morale roll outcomes by consolidating default cases.
• Updated contract type checks to better handle Relief Duty contracts.
• Ensured only Garrison Duty contracts changed the OpFor faction when ending a rout. This will stop Rebel OpFors suddenly turning into Clan OpFors on Security Duty and similar contracts.

Fix #5885

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 10.30%. Comparing base (765c7bd) to head (2d08623).
Report is 14 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##             master    #5890   +/-   ##
=========================================
  Coverage     10.30%   10.30%           
- Complexity     6129     6131    +2     
=========================================
  Files          1038     1038           
  Lines        139154   139153    -1     
  Branches      20609    20609           
=========================================
+ Hits          14335    14337    +2     
+ Misses       123424   123422    -2     
+ Partials       1395     1394    -1     

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