feat(behavior_path_planner): add processOnEntry in start_planner

[kyoichi-sugahara]

Description

🤖 Generated by Copilot at 6dc7005

The pull request improves the safety check logic and code readability for the GoalPlannerModule and StartPlannerModule classes in the behavior path planner. It adds new functions to initialize the safety check parameters on entry, fixes some bugs, and removes some redundant or misplaced code. It also adds comments and TODOs to the header files.

Tests performed

• PASS TIER IV INTERNAL TEST

Not applicable.

Effects on system behavior

Not applicable.

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[codecov]

Codecov Report

Patch coverage: 84.61% and project coverage change: +0.13% 🎉

Comparison is base (82006db) 15.80% compared to head (f434e0c) 15.94%.
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4953      +/-   ##
==========================================
+ Coverage   15.80%   15.94%   +0.13%     
==========================================
  Files        1580     1580              
  Lines      109179   109189      +10     
  Branches    33646    33649       +3     
==========================================
+ Hits        17258    17405     +147     
+ Misses      73313    73149     -164     
- Partials    18608    18635      +27     

Flag	Coverage Δ		*Carryforward flag
differential	17.82% <84.61%> (?)
total	15.90% <ø> (+0.09%)	⬆️	Carriedforward from f269697

*This pull request uses carry forward flags. Click here to find out more.

Files Changed	Coverage Δ
.../scene_module/goal_planner/goal_planner_module.hpp	13.33% <ø> (ø)
...cene_module/start_planner/start_planner_module.hpp	18.18% <ø> (ø)
...optimizer/src/static_centerline_optimizer_node.cpp	15.76% <ø> (ø)
.../scene_module/goal_planner/goal_planner_module.cpp	9.07% <76.92%> (+1.47%)	⬆️
...cene_module/start_planner/start_planner_module.cpp	37.26% <92.30%> (+7.69%)	⬆️

... and 18 files with indirect coverage changes

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