fix(i18n): improve Korean translation of FULL_NAME

[InGyu-Moon]

Comprehensive Summary of your change

This PR updates the Korean translation of the "FULL_NAME" label in the user creation form
from "성과 이름" to "이름(성명)", as the current expression is unnatural and potentially confusing in Korean.

No functional changes are included.

Issue being fixed

N/A (small i18n improvement; no issue created)

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• Well Written Title and Summary of the PR
• Label the PR as needed. (release-note/ignore-for-release)
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• Made sure tests are passing and test coverage is added if needed.
• Considered the docs impact and opened a new docs issue or PR with docs changes if needed in website repository.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 65.85%. Comparing base (c8c11b4) to head (00d9b1a).
⚠️ Report is 612 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main   #22701       +/-   ##
===========================================
+ Coverage   45.36%   65.85%   +20.48%     
===========================================
  Files         244     1073      +829     
  Lines       13333   116100   +102767     
  Branches     2719     2931      +212     
===========================================
+ Hits         6049    76452    +70403     
- Misses       6983    35403    +28420     
- Partials      301     4245     +3944     

Flag	Coverage Δ
unittests	65.85% <ø> (+20.48%)	⬆️

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[Copilot]

Pull request overview

This PR improves the Korean translation of the "FULL_NAME" label in the user profile section by changing it from "성과 이름" (last name and first name) to "이름(성명)" (name/full name), which is more natural and less confusing in Korean.

Key Changes

• Updated the Korean translation for PROFILE.FULL_NAME to use a more natural expression

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[Copilot]

The translation at line 108 has been updated to "이름(성명)", but the placeholder text at line 100 still contains the phrase "성과 이름을 포함한" (including last name and first name), which references the old translation concept. For consistency, the placeholder text should also be updated to align with the new translation approach.