refactor: 컴포넌트 디자인 패턴 적용 및 로직 분리

[JeonGAMJA]

• [x] 아토믹 디자인 패턴 적용
• [x] NotificationForm react-hook-form 로직 분리
• [x] NotificationSection children 제거

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Name	Status	Preview	Comments	Updated (UTC)
advanced-class-project-team-a	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 10, 2024 7:48am