[PM-8368] AnonLayout Footer Updates (#9397)

* add hostname to footer via env service

* add logic for showing/hiding environment

* add docs

* add web env-selector

* refactor to use one slot for env-selector

* add storybook docs

* add env hostname to stories

* remove sample route

apps/web/src/locales/en/messages.json

@@ -581,6 +581,9 @@
   "accessLevel": {
     "message": "Access level"
   },
+  "accessing": {
+    "message": "Accessing"
+  },
   "loggedOut": {
     "message": "Logged out"
   },