Auto merge of #25364 - kunalmohan:22912-MediaTracks, r=jdm

Add `track_list` member to AudioTrack, VideoTrack, TextTrack structs

Add member to the track structs pointing at their associated tracklist
and update it when the track is added or removed from a tracklist.

r?@jdm

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- [X] These changes fix #22912  (GitHub issue number if applicable)

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1 files changed, 1 insertions, 0 deletions

diff --git a/components/script/dom/htmltrackelement.rs b/components/script/dom/htmltrackelement.rs
index caa8932b415..c67701b3894 100644
--- a/components/script/dom/htmltrackelement.rs
+++ b/components/script/dom/htmltrackelement.rs
@@ -59,6 +59,7 @@ impl HTMLTrackElement {
             Default::default(),
             Default::default(),
             Default::default(),
+            None,
         );
         Node::reflect_node(
             Box::new(HTMLTrackElement::new_inherited(