refactor(behavior path planner): simplify code by using lambda

[danielsanchezaran]

Description

🤖 Generated by Copilot at 66ccb58

Refactor behavior_path_planner_node.cpp to use lambda function for scene module registration and publisher creation. This simplifies the code and avoids repetition.

Tests performed

Ran PSim and checked that the behavior path planning modules are launched/used normally.

Effects on system behavior

N/A

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[kyoichi-sugahara]

LGTM!!!!
Thank you so much for your work 😍

[codecov]

Codecov Report

Attention: 16 lines in your changes are missing coverage. Please review.

Comparison is base (1caa1b3) 14.86% compared to head (5faa5e8) 14.85%.
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5124      +/-   ##
==========================================
- Coverage   14.86%   14.85%   -0.02%     
==========================================
  Files        1629     1629              
  Lines      112863   113162     +299     
  Branches    34900    35110     +210     
==========================================
+ Hits        16782    16814      +32     
- Misses      77241    77501     +260     
- Partials    18840    18847       +7     

Flag	Coverage Δ		*Carryforward flag
differential	12.56% <11.11%> (?)
total	14.87% <ø> (+<0.01%)	⬆️	Carriedforward from 1caa1b3

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

Files	Coverage Δ
...or_path_planner/src/behavior_path_planner_node.cpp	27.50% <11.11%> (+0.45%)	⬆️

... and 2 files with indirect coverage changes

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