feat(autoware_traffic_light_multi_camera_fusion): resolve clang-tidy error

[yhisaki]

Description

Fixed clang-tidy errors.

Related links

Parent Issue:

• Link

How was this PR tested?

Notes for reviewers

None.

Interface changes

None.

Effects on system behavior

None.

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[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 29.81%. Comparing base (d819a66) to head (a325c0b). Report is 6 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #9336 +/- ## ========================================== - Coverage 29.81% 29.81% -0.01% ========================================== Files 1338 1338 Lines 103200 103146 -54 Branches 40208 40190 -18 ========================================== - Hits 30774 30753 -21 + Misses 69437 69408 -29 + Partials 2989 2985 -4 ``` | [Flag](https://app.codecov.io/gh/autowarefoundation/autoware.universe/pull/9336/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=autowarefoundation) | Coverage Δ | | *Carryforward flag | |---|---|---|---| | [differential](https://app.codecov.io/gh/autowarefoundation/autoware.universe/pull/9336/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=autowarefoundation) | `0.00% <ø> (?)` | | | | [total](https://app.codecov.io/gh/autowarefoundation/autoware.universe/pull/9336/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=autowarefoundation) | `29.81% <ø> (-0.01%)` | :arrow_down: | Carriedforward from [43d94eb](https://app.codecov.io/gh/autowarefoundation/autoware.universe/commit/43d94ebe76ceef0eb83511f33c83cfbe03f7d262?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=autowarefoundation) | *This pull request uses carry forward flags. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=autowarefoundation) to find out more.

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