fix(lane_change): fix bug when target reference path is empty

[tkimura4]

Signed-off-by: tomoya.kimura [email protected]

Description

When target_lane_reference_path is empty, behavior_path_planner dies with the following error.
I fixed it.

( Note: In the external lane change module, the reference path is often empty )

Related links

(TIER IV Internal Link) evaluator https://evaluation.tier4.jp/evaluation/reports/4ec045cd-5fea-550e-a4a9-9315ccfc19a0/tests/4874d7ea-2934-5bba-863b-812de0c2bcac/ca5874a9-7b72-5568-88cb-af3c42bc4371/ea2a9252-30df-548e-99f9-6bed698ded47?project_id=prd_jt

Tests performed

I confirmed that the behavior module does not die with merging this PR using the planning simulator.

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[codecov]

Codecov Report

Base: 11.64% // Head: 11.62% // Decreases project coverage by -0.02% ⚠️

Coverage data is based on head (cb5b424) compared to base (7ac518f).
Patch coverage: 0.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2752      +/-   ##
==========================================
- Coverage   11.64%   11.62%   -0.02%     
==========================================
  Files        1312     1312              
  Lines       91445    91593     +148     
  Branches    24342    24441      +99     
==========================================
+ Hits        10646    10649       +3     
- Misses      69683    69826     +143     
- Partials    11116    11118       +2     

Flag	Coverage Δ		*Carryforward flag
differential	4.70% <0.00%> (?)
total	11.64% <0.00%> (+<0.01%)	⬆️	Carriedforward from d5a1f96

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

Impacted Files	Coverage Δ
...path_planner/src/scene_module/lane_change/util.cpp	0.00% <0.00%> (ø)
...erception/traffic_light_classifier/src/nodelet.cpp	0.00% <0.00%> (ø)
...vehicle_model/sim_model_ideal_steer_acc_geared.cpp	88.09% <0.00%> (+7.14%)	⬆️

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[zulfaqar-azmi-t4]

LGTM