fix(behavior_path_planner): define hysteresis_factor_expand_rate

[kyoichi-sugahara]

Description

Parameter of hysteresis_factor_expand_rate failed to be initialized.
Fix this problem and add hysteresis_factor_expand_rate in SafetyCheckParams.

This PR should be merged first.

Tests performed

run psim

confirmed hysteresis_factor_expand_rate is sucessfully assigned.
And start_planner doesn't die.

Effects on system behavior

Not applicable.

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[codecov]

Codecov Report

Patch coverage has no change and project coverage change: -0.01% ⚠️

Comparison is base (5b40aa5) 15.74% compared to head (982b0be) 15.74%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5002      +/-   ##
==========================================
- Coverage   15.74%   15.74%   -0.01%     
==========================================
  Files        1587     1587              
  Lines      109828   109832       +4     
  Branches    33718    33722       +4     
==========================================
  Hits        17290    17290              
  Misses      73908    73908              
- Partials    18630    18634       +4     

Flag	Coverage Δ		*Carryforward flag
differential	17.78% <0.00%> (?)
total	15.74% <ø> (+<0.01%)	⬆️	Carriedforward from 5b40aa5

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

Files Changed	Coverage Δ
..._safety_checker/path_safety_checker_parameters.hpp	50.00% <ø> (ø)
..._planner/src/scene_module/goal_planner/manager.cpp	5.17% <0.00%> (-0.05%)	⬇️
...planner/src/scene_module/start_planner/manager.cpp	4.44% <0.00%> (-0.04%)	⬇️
...cene_module/start_planner/start_planner_module.cpp	29.86% <0.00%> (ø)

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