refactor(occlusion_spot): boost::optional to std::optional

[zulfaqar-azmi-t4]

Description

🤖[deprecated] Generated by Copilot at 56a7913

Replaced boost::optional with std::optional in the behavior_velocity_occlusion_spot_module to reduce dependency on Boost and use standard C++17 features. This affects the functions and types related to occlusion and occupancy polygons in grid_utils.cpp, grid_utils.hpp, occlusion_spot_utils.cpp, and occlusion_spot_utils.hpp.

Tests performed

Not applicable.

Effects on system behavior

Not applicable.

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[codecov]

Codecov Report

Attention: 8 lines in your changes are missing coverage. Please review.

Comparison is base (f41d3fa) 15.28% compared to head (56a7913) 15.28%.
Report is 3 commits behind head on main.

Files	Patch %	Lines
..._velocity_occlusion_spot_module/src/grid_utils.cpp	0.00%	5 Missing ⚠️
...occlusion_spot_module/src/occlusion_spot_utils.cpp	0.00%	3 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #5832   +/-   ##
=======================================
  Coverage   15.28%   15.28%           
=======================================
  Files        1739     1739           
  Lines      119756   119746   -10     
  Branches    36369    36363    -6     
=======================================
  Hits        18301    18301           
+ Misses      80976    80966   -10     
  Partials    20479    20479           

Flag	Coverage Δ		*Carryforward flag
differential	20.05% <0.00%> (?)
total	15.28% <ø> (+<0.01%)	⬆️	Carriedforward from f41d3fa

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[shmpwk]

Great work!