feat(behavior_path_planner): enable pull_over backward_parking by default

[kosuke55]

Description

enable pull_over backward_parking by default for checking in scenario tests.

Related links

tier4/autoware_launch#448

Tests performed

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[codecov]

Codecov Report

Merging #1653 (d9ea0f3) into main (27f9216) will not change coverage.
The diff coverage is 0.00%.

@@           Coverage Diff           @@
##             main    #1653   +/-   ##
=======================================
  Coverage   10.66%   10.66%           
=======================================
  Files        1108     1108           
  Lines       78748    78748           
  Branches    18640    18640           
=======================================
  Hits         8397     8397           
  Misses      61438    61438           
  Partials     8913     8913           

Flag	Coverage Δ		*Carryforward flag
differential	0.78% <0.00%> (?)
total	10.64% <0.00%> (ø)		Carriedforward from 27f9216

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

Impacted Files	Coverage Δ
...or_path_planner/src/behavior_path_planner_node.cpp	0.23% <0.00%> (ø)

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[kosuke55]

update obstacle_stop_planner and make related issue.

• docs(obstacle_stop_planner): add limitations of backward driving #1696
• obstacle_stop_planner does not work for backward driving #1697

[TakaHoribe]

LGTM