Fix timing of change events for <select> elements (#37293)

Fixes two silly bugs in the implementation of `<select>` elements.
* We did not fire `input` events
* We fired `change` events *before* updating the selected value

Both of these are only relevant when the embedder selects a value, so
due to our lack of webdriver support we can't test them.

With these changes it is possible to switch the language on
https://toolbox.googleapps.com/apps/main/.

---------

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>

components/script/dom/event.rs

@@ -1124,7 +1124,13 @@ impl TaskOnce for EventTask {
         let target = self.target.root();
         let bubbles = self.bubbles;
         let cancelable = self.cancelable;
-        target.fire_event_with_params(self.name, bubbles, cancelable, CanGc::note());
+        target.fire_event_with_params(
+            self.name,
+            bubbles,
+            cancelable,
+            EventComposed::NotComposed,
+            CanGc::note(),
+        );
     }
 }