DEV: Replace topic-tracking-state:main with service:topic-tracking-state (#17802)

This will allow consumers to inject it using `topicTrackingState: service()` in preparation for the removal of implicit injections in Ember 4.0. `topic-tracking-state:main` is still available and will print a deprecation notice.

Ideally we would convert topic-tracking-state into a true service, rather than registering a model instance into the registry. However, inter-dependencies between service injections make this very difficult to achieve. We don't want to block Glimmer Component work, so this commit does the minimum for now.

app/assets/javascripts/discourse-common/addon/resolver.js

@@ -83,6 +83,11 @@ const DEPRECATED_MODULES = new Map(
       since: "2.9.0.beta7",
       dropFrom: "3.0.0",
     },
+    "topic-tracking-state:main": {
+      newName: "service:topic-tracking-state",
+      since: "2.9.0.beta7",
+      dropFrom: "3.0.0",
+    },
   })
 );