fix(ui): one provider icon per playlist row, imperative Korean remove label

A restored Stalker or Xtream playlist can also carry a URL, and the row's
independent checks then showed the M3U URL icon next to the provider icon.
The row now switches on resolvePlaylistSourceIconKey(), the precedence every
other surface uses, so each source shows exactly one icon.

HOME.PLAYLISTS.REMOVE now names the confirm button and the row's delete
tooltip; in Korean it read "the playlist has been removed". It now says
"remove playlist", like every other locale.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

apps/web/src/assets/i18n/ko.json

@@ -65,7 +65,7 @@
             "CHANNELS": "채널",
             "ADDED": "추가되었습니다",
             "SHOW_DETAILS": "재생 목록 세부 정보 표시",
-            "REMOVE": "재생 목록이 제거되었습니다",
+            "REMOVE": "재생 목록 제거",
             "SEARCH_PLAYLISTS": "제목으로 재생목록 검색",
             "INFO_DIALOG": {
                 "PLAYLIST_DETAILS": "재생 목록 세부 사항",