test: utils의 테스트 케이스를 보강하여 uncovered line을 개선합니다

[po4tion]

Overview

src/utils.spec.ts의 hasBatchim함수의 테스트 케이스를 보강하였습니다.

AS-IS

TO-BE

PR Checklist

• I read and included theses actions below

1. I have read the Contributing Guide
2. I have written documents and tests, if needed.

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Name	Status	Preview	Comments	Updated (UTC)
es-hangul	❌ Failed (Inspect)			Jun 5, 2024 8:17am

[okinawaa]

LGTM:smile