[Localization] Add minor Korean translations to ability-trigger file (costar,trace)

[smee6]

What are the changes?

1. Add Korean translation for costar ability trigger
2. Add Korean translation for trace ability trigger
   refered from Pokémon Scarlet and Violet's official translation.

Why am I doing these changes?

Fix missing Korean translations for costar and trace abilities in ability-trigger file to enhance user immersion.

What did change?

Before the PR

The abilities costar and trace lacked Korean translations.
Korean-native players faced interruptions in immersion due to untranslated ability descriptions.


After the PR
Added Korean translations for the costar and trace abilities.
Korean-native players will now see consistent translations, improving their gaming experience and immersion.

How to test the changes?

1. Installed the project locally using npm install.
2. Played with Polygon and Flamigo to ensure costar and trace description is shown correctly.

Checklist

• [v] There is no overlap with another PR?
• [v] The PR is self-contained and cannot be split into smaller PRs?
• [v] Have I provided a clear explanation of the changes?
• [v] Have I tested the changes (manually)?
  • [v] Are all unit tests still passing? (npm run test)

[smee6]

For "trace", Conflict should be resolved as current commit #3087. (ref. above image / official translation)
but for the "costar", "costar": "{{pokemonName}}[[는]] {{allyName}}의\n능력 변화를 복사했다!", would be okay.
cuz in the sentence with '\n' has more readability.

[Tempo-anon]

Can you fix the merge conflicts such as the things in .github/ISSUE_TEMPLATE? You should be starting your PRs from beta since that's where merges should go