Fix #8729: Fixed Routed OpFors Generating Scenarios Despite Having No Forces to Fight Them

[IllianiBird]

Fix #8729

This was caused by an oversight in how we scheduled and then executed scenario generation. If the OpFor routed before a scheduled scenario's date, that scenario would still go ahead. Now we discard the scheduled scenario entirely.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 15.20%. Comparing base (71e0df4) to head (9802518).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
.../mekhq/campaign/stratCon/StratConRulesManager.java	0.00%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #9104      +/-   ##
============================================
+ Coverage     15.18%   15.20%   +0.01%     
- Complexity     9332     9335       +3     
============================================
  Files          1308     1308              
  Lines        173519   173520       +1     
  Branches      26202    26203       +1     
============================================
+ Hits          26349    26383      +34     
+ Misses       144098   144060      -38     
- Partials       3072     3077       +5     

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