Use Event type for IndexedDB errors

Author: unarist

src/main/scala/org/scalajs/dom/raw/Idb.scala

@@ -509,7 +509,7 @@ class IDBTransaction extends EventTarget {
    *
    * MDN
    */
-  var onerror: js.Function1[ErrorEvent, _] = js.native
+  var onerror: js.Function1[Event, _] = js.native
 
   /**
    * The event handler for the onabort event.
@@ -613,7 +613,7 @@ class IDBDatabase extends EventTarget {
    *
    * MDN
    */
-  var onerror: js.Function1[ErrorEvent, _] = js.native
+  var onerror: js.Function1[Event, _] = js.native
 
   /**
    * Fires when access of the database is aborted.
@@ -788,7 +788,7 @@ class IDBRequest extends EventTarget {
    *
    * MDN
    */
-  var onerror: js.Function1[ErrorEvent, _] = js.native
+  var onerror: js.Function1[Event, _] = js.native
 
   /**
    * The state of the request. Every request starts in the pending state. The state