fix(diagnostic_graph_aggregator): fix shadowArg warning in create_unit_config

[Koichi98]

Description

src/universe/autoware.universe/system/diagnostic_graph_aggregator/src/common/graph/config.cpp:105:21: style: Local variable 'data' shadows outer argument [shadowArgument]
  for (const auto & data : list) {
                    ^
src/universe/autoware.universe/system/diagnostic_graph_aggregator/src/common/graph/config.cpp:94:62: note: Shadowed declaration
UnitConfig * FileLoader::create_unit_config(const TreeData & data)
                                                             ^
src/universe/autoware.universe/system/diagnostic_graph_aggregator/src/common/graph/config.cpp:105:21: note: Shadow variable
  for (const auto & data : list) {

Tests performed

Not applicable.

Effects on system behavior

Not applicable.

Interface changes

Pre-review checklist for the PR author

The PR author must check the checkboxes below when creating the PR.

• I've confirmed the contribution guidelines.
• The PR follows the pull request guidelines.

In-review checklist for the PR reviewers

The PR reviewers must check the checkboxes below before approval.

• The PR follows the pull request guidelines.

Post-review checklist for the PR author

The PR author must check the checkboxes below before merging.

• There are no open discussions or they are tracked via tickets.

After all checkboxes are checked, anyone who has write access can merge the PR.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 64.67%. Comparing base (507e3f4) to head (0bdd825).
Report is 123 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #7664       +/-   ##
===========================================
+ Coverage   14.84%   64.67%   +49.83%     
===========================================
  Files        1999       18     -1981     
  Lines      139163      620   -138543     
  Branches    43716      285    -43431     
===========================================
- Hits        20661      401    -20260     
+ Misses      95731      156    -95575     
+ Partials    22771       63    -22708     

Flag	Coverage Δ
differential	64.67% <100.00%> (?)
total	?

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.