Remove remote users from the license counting and explicitly dissallow them to log in (#22582)

* Making all the counts aware of Remote users

* Disable login for remote users

* Adding tests for login remote_users error

* Adding tests for the store

* Adding frontend part of not counting remote users in the license

* Addressing PR review comment

* Adding the new ExternaUserId field to users

* Running make migrations-extract

* Running make app-layers and make gen-serialized

* Revert "Adding the new ExternaUserId field to users"

This reverts commit 12e5fd518962a16cdbdb8964179b6cd8e915f230.

* Adding GetUserByRemoteID methods

* Adding needed migration for users

* i18n-extract

* Fixing postgres increase remote user id field size migration up and down

* run make gen-serialized

* Removing migration code

* Not count remote users as part of the cloud pricing

* Add the cloud subscription when a user gets promote from remote to not-remote

* Fixing merge problems

---------

Co-authored-by: Mattermost Build <build@mattermost.com>

server/i18n/en.json

@@ -4291,6 +4291,10 @@
     "id": "api.user.login.not_verified.app_error",
     "translation": "Login failed because email address has not been verified."
   },
+  {
+    "id": "api.user.login.remote_users.login.error",
+    "translation": "Login failed because remote users are not allow to log in."
+  },
   {
     "id": "api.user.login.use_auth_service.app_error",
     "translation": "Please sign in using {{.AuthService}}."