chore: 修复视频进度拖拽不了的问题

src/modules/viewer/components/player/videoPlayer.vue

@@ -18,7 +18,7 @@ export default {
     return { player: null, videoRetry, currentTime: 0, duration: 0 }
   },
   watch: {
-    mpt: {
+    currentTime: {
       immediate: true,
       handler() {
         const left = (Math.max(this.mpt, this.currentTime) / this.duration) * 100