fix(detected_object_validation): fix shadowVariable

[kobayu858]

Description

This is a fix based on cppcheck shadowVariable warnings

perception/detected_object_validation/src/occupancy_grid_map/occupancy_grid_map_validator.cpp:166:14: style: Local variable 'mask' shadows outer variable [shadowVariable]
        auto mask = getMask(ros_occ_grid, object, passed_objects_image);
             ^

perception/detected_object_validation/src/occupancy_grid_map/occupancy_grid_map_validator.cpp:169:14: style: Local variable 'mask' shadows outer variable [shadowVariable]
        auto mask = getMask(ros_occ_grid, object, removed_objects_image);
             ^

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

Attention: Patch coverage is 0% with 4 lines in your changes missing coverage. Please review.

Project coverage is 28.76%. Comparing base (050fa29) to head (4d849b5).
Report is 17 commits behind head on main.

Files	Patch %	Lines
...ccupancy_grid_map/occupancy_grid_map_validator.cpp	0.00%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7935      +/-   ##
==========================================
+ Coverage   28.74%   28.76%   +0.02%     
==========================================
  Files        1593     1594       +1     
  Lines      116848   116852       +4     
  Branches    50027    50050      +23     
==========================================
+ Hits        33586    33615      +29     
+ Misses      74221    74139      -82     
- Partials     9041     9098      +57     

Flag	Coverage Δ		*Carryforward flag
differential	2.87% <0.00%> (?)
total	28.77% <ø> (+0.02%)	⬆️	Carriedforward from a39cfb7

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[kobayu858]

@badai-nguyen @Shin-kyoto @miursh @YoshiRi @yukkysaito

Please confirm the PR. Thank you very much.