fix: [디자인QA] 슬라이드 인덱스 전환 시 영상이 처음부터 재생되도록 적용

layers/templates/GrDetail02/index.vue

@@ -13,6 +13,8 @@ interface Props {
 
 const props = defineProps<Props>()
 
+const currentSlideIndex = ref<number | null>(null)
+
 const slideData = computed(() => {
   return getComponentContainer(props.components, 'group_sets', { maxLength: 7 })
 })
@@ -29,6 +31,7 @@ const paginationData = computed(() => {
 <template>
   <section class="section-standard">
     <BlocksSlideThumbnail
+      v-model:index="currentSlideIndex"
       :thumbnail-data="thumbnailData"
       :pagination-data="paginationData"
     >
@@ -36,6 +39,7 @@ const paginationData = computed(() => {
         <WidgetsBackground
           v-if="hasComponentGroup(item, 'background')"
           :resources-data="getComponentGroup(item, 'background')"
+          :video-play="currentSlideIndex === index"
         />
         <div class="content-standard">
           <WidgetsMainTitle