A remote subscriber left a published track.
Accepted inbound subscriptions carry the same opaque subscription handle
emitted on join. request_id remains temporarily available for
compatibility.
Summary
Types
@type t() :: %MOQX.Event.PublicationSubscriberLeft{ request_id: non_neg_integer() | nil, subscription: MOQX.PublishedSubscription.t() | nil, track: MOQX.PublishedTrack.t() }