UI: Ember upgrade: Handle deprecation router service from host (#28603)

* use alias for router injection

* update @router declarations in engine files

* fix remaining pki router imports

* dynamically set router based on owner

* address replication routers

* update markdown docs

* use non-deprecated import for getOwner

* revert out of scope changes

* add transition-to test

ui/lib/replication/addon/controllers/application.js

@@ -29,7 +29,7 @@ export default Controller.extend(structuredClone(DEFAULTS), {
   isModalActive: false,
   isTokenCopied: false,
   expirationDate: null,
-  router: service(),
+  router: service('app-router'),
   store: service(),
   rm: service('replication-mode'),
   replicationMode: alias('rm.mode'),