Bug Fix: Ensure waiting times reach the end of the simulation

[RHammond2]

This PR addresses an uncommon bug where a non-operational period coincides with the end of the simulation, but the logic continuously attempts to wait until the beginning of that day, instead of the end of the simulation.

[codecov[bot]]

Codecov Report

Merging #106 (cf66937) into develop (97f0cdf) will decrease coverage by 0.07%. The diff coverage is 0.00%.

@@             Coverage Diff             @@
##           develop     #106      +/-   ##
===========================================
- Coverage    54.97%   54.91%   -0.07%     
===========================================
  Files           21       21              
  Lines         3587     3591       +4     
  Branches       726      727       +1     
===========================================
  Hits          1972     1972              
- Misses        1493     1497       +4     
  Partials       122      122              

Files Changed	Coverage Δ
wombat/core/environment.py	76.89% <ø> (ø)
wombat/core/service_equipment.py	62.11% <0.00%> (-0.41%)	:arrow_down: