[native][web] Fix keyserver store tranform error

Summary:
issue: https://linear.app/comm/issue/ENG-4930/keyserver-missing-from-keyserverstore
Please see this comment for detailed explantion of the solution: https://linear.app/comm/issue/ENG-4930/keyserver-missing-from-keyserverstore#comment-62fa00d1

Test Plan: Checked that after the migrations were added, the error does not appear.

Reviewers: michal, kamil

Reviewed By: michal

Subscribers: ashoat, tomek

Differential Revision: https://phab.comm.dev/D9246