Revert "优化focus事件"

This reverts commit df424ec3ac.

packages/artplayer/src/events/clickInit.js

@@ -2,11 +2,8 @@ export default function clickInit(art, events) {
     const { $player } = art.template;
     events.proxy(document, ['click', 'contextmenu'], (event) => {
         if (event.composedPath && event.composedPath().indexOf($player) > -1) {
-            if (!art.isFocus) {
-                art.isFocus = true;
-                art.emit('focus');
-            }
-            art.emit(event.type, event);
+            art.isFocus = true;
+            art.emit('focus');
         } else if (art.isFocus) {
             art.isFocus = false;
             art.emit('blur');