update style

packages/artplayer/src/style/plugins.scss

@@ -36,6 +36,7 @@
         color: #fff;
         border-radius: 50%;
         background-color: rgba(0, 0, 0, 0.5);
+        user-select: none;
     }
 
     &.art-control-show {

packages/artplayer/src/style/video.scss

@@ -10,5 +10,6 @@
         height: 100%;
         background-color: #000;
         cursor: pointer;
+        user-select: none;
     }
 }