Remove element event listeners through base component (#33429)

After some research, I found out that EventHandler saves all the custom events per element using namespace, and is capable of removing handlers using only the element and its namespace (`DATA_KEY`).

So, probably is better to utilize the base-component to do the same job.

js/src/toast.js

@@ -156,8 +156,6 @@ class Toast extends BaseComponent {
       this._element.classList.remove(CLASS_NAME_SHOW)
     }
 
-    EventHandler.off(this._element, EVENT_CLICK_DISMISS)
-
     super.dispose()
     this._config = null
   }