[native][web] Increase redux-persist migration timeout to 30s

Summary:
native migration 38 takes >10s on production for my user, so I'm increasing the timeout to avoid being force-logged-out.

This addresses ENG-8614.

Test Plan: Confirm that I can go from build 354 to 358 + this diff without being force-logged-out while testing a production build with my user

Reviewers: tomek, kamil, marcin

Differential Revision: https://phab.comm.dev/D12625