fix(autoware_mission_planner): fix noConstructor

[kobayu858]

Description

This is a fix based on cppcheck noConstructor warnings.

planning/autoware_mission_planner/src/lanelet2_plugins/default_planner.hpp:44:1: style: The class 'DefaultPlanner' does not declare a constructor although it has private member variables which likely require initialization. [noConstructor]
class DefaultPlanner : public mission_planner::PlannerPlugin
^

In is_graph_ready_(false), param_(), and node_(nullptr), initialization is done with reference to void DefaultPlanner::initialize_common. route_handler_() uses the class RouteHandler_() uses the default constructor of class RouteHandler_() for initialization.

Related links

Parent Issue:

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How was this PR tested?

Notes for reviewers

None.

Interface changes

None.

Effects on system behavior

None.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 23.88%. Comparing base (3470824) to head (a9f9a9a).
Report is 21 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8505      +/-   ##
==========================================
- Coverage   23.89%   23.88%   -0.02%     
==========================================
  Files        1380     1387       +7     
  Lines      101835   101903      +68     
  Branches    38773    38776       +3     
==========================================
+ Hits        24337    24338       +1     
- Misses      75041    75108      +67     
  Partials     2457     2457              

Flag	Coverage Δ		*Carryforward flag
differential	9.30% <100.00%> (?)
total	23.89% <ø> (ø)		Carriedforward from 3470824

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