refactor: update event handling in plugins and core

- Changed event handling from `art.proxy` to `art.on` for visibility change and pointer events in the ads and danmuku plugins to improve consistency and maintainability.
- Bumped version of the danmuku plugin from 5.1.8 to 5.1.9.
- Added pointer events to the global event initialization in the core to ensure proper event handling across the application.

packages/artplayer-plugin-danmuku/package.json

@@ -1,6 +1,6 @@
 {
   "name": "artplayer-plugin-danmuku",
-  "version": "5.1.8",
+  "version": "5.1.9",
   "description": "Danmuku plugin for ArtPlayer",
   "author": "Harvey Zack <laozhaochaguan@gmail.com>",
   "license": "MIT",