fix: lint #12743

[Candinya]

What

fix: lint fail caused by #12743

Why

Additional info (optional)

Checklist

• Read the contribution guide
• Test working in a local environment
• (If needed) Add story of storybook
• (If needed) Update CHANGELOG.md
• (If possible) Add tests

[codecov]

Codecov Report

Attention: 4 lines in your changes are missing coverage. Please review.

Comparison is base (471c8ec) 79.79% compared to head (ccf5774) 79.90%.

Files	Patch %	Lines
packages/backend/src/core/EmailService.ts	0.00%	4 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #12761      +/-   ##
===========================================
+ Coverage    79.79%   79.90%   +0.10%     
===========================================
  Files          956      956              
  Lines       108800   108802       +2     
  Branches      8373     8405      +32     
===========================================
+ Hits         86814    86934     +120     
+ Misses       21986    21868     -118     

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[syuilo]

🙏🏻