[keyserver] Include stateVersion when converting notifications

Summary:
ENG-4579

ID conversion is based on the stateVersion. Unfortunately the notif code only handled the codeVersion and passed a new platformDetails object that didn't contain the stateVersion so this diff improves that.

This wasn't noticed earlier because previously conversion was based on codeVersion so it was working properly. Additionaly created ENG-4850 to refactor this code to handle the platformDetails together in the future.

Test Plan:

• Tested sending notification on iOS, macOS, Android, Web and Windows.
  • On clients with stateVersion < 43 the ids weren't converted
  • On clients with stateVersion >= 43 the ids were converted

On mobile clients, the IDs were tested in the JS (not native code.)

Reviewers: tomek, marcin, atul

Reviewed By: tomek, marcin

Subscribers: ashoat

Differential Revision: https://phab.comm.dev/D8720