translate: Translated Deep Dive titles in updating-objects-in-state

[timingsniper]

• /learn/updating-objects-in-state의 Deep Dive 제목들을 번역했습니다.

Progress

• [x] 번역 초안 작성 (Draft translation)
• [x] 공통 스타일 가이드 확인 (Check the common style guide)
• [x] 모범사례 확인 (Check best practices)
• [x] 용어 확인 (Check the term)
• [x] 맞춤법 검사 (Spelling check)
• [ ] 리뷰 반영 (Resolve reviews)

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