feat: Refactor global event handling in ArtPlayer

- Introduced a new globalInit function to manage document and window events.
- Replaced direct event proxies with a unified bindGlobalEvents method.
- Updated event handling in various modules to utilize the new global event system.
- Removed the deprecated documentInit module.
- Bumped version to 5.2.6 in package.json.

packages/artplayer-plugin-document-pip/src/index.js

@@ -115,6 +115,7 @@ export default function artplayerPluginDocumentPip(userOptions = {}) {
         }
 
         addClass($player, 'artplayer-document-pip')
+        art.events.bindGlobalEvents?.()
         art.emit('document-pip', true)
       }
       catch (err) {
@@ -143,6 +144,7 @@ export default function artplayerPluginDocumentPip(userOptions = {}) {
         state.win.close()
         state.win = null
         removeClass($player, 'artplayer-document-pip')
+        art.events.bindGlobalEvents?.()
         art.emit('document-pip', false)
       }
       catch (err) {