fix(behavior_path_planner): drivable area expansion for hatched road markings

[takayuki5168]

Description

Fix a minor bug of drivable area expansion considering hatched road markings.

Without this PR
Upper bound is weird in both cases.

With this PR

Tests performed

planning simulator

Effects on system behavior

Nothing

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[codecov]

Codecov Report

Patch coverage: 6.57% and project coverage change: -0.01 ⚠️

Comparison is base (36cad1c) 14.09% compared to head (8f69b62) 14.08%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3900      +/-   ##
==========================================
- Coverage   14.09%   14.08%   -0.01%     
==========================================
  Files        1446     1446              
  Lines      102069   102110      +41     
  Branches    27228    27251      +23     
==========================================
- Hits        14389    14385       -4     
- Misses      71885    71930      +45     
  Partials    15795    15795              

Flag	Coverage Δ		*Carryforward flag
differential	13.22% <6.57%> (?)
total	14.09% <ø> (-0.01%)	⬇️	Carriedforward from 36cad1c

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

Impacted Files	Coverage Δ
..._controller/include/mpc_lateral_controller/mpc.hpp	46.66% <ø> (ø)
control/mpc_lateral_controller/src/mpc.cpp	48.29% <ø> (+0.10%)	⬆️
..._lateral_controller/src/mpc_lateral_controller.cpp	33.84% <ø> (-0.90%)	⬇️
control/mpc_lateral_controller/test/test_mpc.cpp	56.60% <ø> (-0.17%)	⬇️
...anner/include/behavior_path_planner/parameters.hpp	50.00% <ø> (ø)
...planner/src/scene_module/lane_change/interface.cpp	14.55% <0.00%> (-0.06%)	⬇️
...ehavior_path_planner/src/utils/avoidance/utils.cpp	3.24% <0.00%> (-0.36%)	⬇️
planning/behavior_path_planner/src/utils/utils.cpp	17.54% <15.62%> (+0.19%)	⬆️

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