fix(goal_planner): fix waiting approval path of backward parking

[kosuke55]

Description

due to #9829, the waiting approval path is cut to original goal, but this is intended for ARC_BACKWARD.
when using ARC_BACKWARD, the start pose of parking is after goal pose, so the path should be generated to the start pose

before

stuck with arc_backward

after

works with arc_backward

no problem with shift too

Related links

Parent Issue:

• Link

How was this PR tested?

psim

2025/01/24 https://evaluation.tier4.jp/evaluation/reports/bfe6f4b8-3f63-5172-aa67-3f143be862fe/?project_id=prd_jt

Notes for reviewers

None.

Interface changes

None.

Effects on system behavior

None.

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[codecov]

Codecov Report

Attention: Patch coverage is 0% with 5 lines in your changes missing coverage. Please review.

Project coverage is 29.74%. Comparing base (8b0b9a7) to head (219fa9e).

Files with missing lines	Patch %	Lines
...th_goal_planner_module/src/goal_planner_module.cpp	0.00%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #10015      +/-   ##
==========================================
- Coverage   29.75%   29.74%   -0.02%     
==========================================
  Files        1435     1438       +3     
  Lines      108306   108369      +63     
  Branches    42955    42957       +2     
==========================================
  Hits        32229    32229              
- Misses      72948    73011      +63     
  Partials     3129     3129              

Flag	Coverage Δ		*Carryforward flag
differential	0.50% <0.00%> (?)
total	29.75% <ø> (+<0.01%)	⬆️	Carriedforward from 8b0b9a7

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