refactor(frontend): Vue 드래그 정렬 라이브러리를 교체

app/game-frontend/src/views/MyPageView.vue

@@ -691,7 +691,7 @@ onMounted(() => {
         </div>
         <p>항목을 끌어 놓거나 위·아래 버튼으로 상대 순서를 바꿉니다.</p>
         <SortableStringList
-            :list="mobileLayoutOrder"
+            v-model:list="mobileLayoutOrder"
             tag="ol"
             class="mobile-layout-list"
         >

app/game-frontend/src/views/NpcControlView.vue

@@ -448,7 +448,7 @@ const submitPriority = async (section: PrioritySectionKey) => {
                         <div class="priority-column">
                             <div class="sub_bar legacy-bg2">비활성</div>
                             <SortableStringList
-                                :list="panel.state.inactive"
+                                v-model:list="panel.state.inactive"
                                 :group="`npc-priority-${panel.key}`"
                                 tag="div"
                                 class="priority-list"
@@ -477,7 +477,7 @@ const submitPriority = async (section: PrioritySectionKey) => {
                         <div class="priority-column">
                             <div class="sub_bar legacy-bg2">활성</div>
                             <SortableStringList
-                                :list="panel.state.active"
+                                v-model:list="panel.state.active"
                                 :group="`npc-priority-${panel.key}`"
                                 tag="div"
                                 class="priority-list"