Use Window in new methods instead of GlobalScope for interfaces with … (#36133)

…Window-only constructors

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---------

Signed-off-by: richarddushime <mudaherarich@gmail.com>
Signed-off-by: Richard Dushime <45734838+richarddushime@users.noreply.github.com>

components/script/dom/texttracklist.rs

@@ -79,7 +79,7 @@ impl TextTrackList {
 
                     if let Some(track) = this.item(idx) {
                         let event = TrackEvent::new(
-                            &this.global(),
+                            this.global().as_window(),
                             atom!("addtrack"),
                             false,
                             false,