fix(admin): 转码媒资 id 按字符串传递并处理空态

src/views/contentManagement/upload/EpisodeTranscodeStatusPanel.vue

@@ -47,7 +47,7 @@ const { t } = useI18n()
   </div>
   <el-empty
     v-else-if="detail && !view.hasMedia"
-    :description="t('episodeTranscode.noMedia')"
+    :description="detail.errorMsg || t('episodeTranscode.noMedia')"
     :image-size="72"
   />
   <template v-else-if="detail">