fix: 관리자 이미지 대체 흐름 보정

frontend/src/composables/useAdminCustomItems.js

@@ -89,13 +89,12 @@ export function useAdminCustomItems({
     modalTargetCustomItem.value = item || null
     customItemModalDraftLabel.value = item?.label || ''
     customItemModalTargetTemplateId.value = ''
-    customItemReplacementQuery.value = item?.label || ''
+    customItemReplacementQuery.value = ''
     customItemReplacementItems.value = []
     customItemReplacementTargetId.value = ''
     customItemReplacementBusy.value = false
     customItemModalOpen.value = true
     pushCustomItemModalHistoryState()
-    void refreshReplacementCandidates()
   }
 
   function closeCustomItemModal({ fromPopState = false } = {}) {