[native] Introduce native migration to strip member permissions

Summary:
Client side change to strip member permissions from persisted thread infos.

Depends on D12788

Test Plan:
Ran migration on native client successfully:

Redux DevTools before:

Redux DevTools after:

Will do a couple more run-throughs on native to make sure everything is good.

Reviewers: ashoat, tomek

Reviewed By: ashoat

Differential Revision: https://phab.comm.dev/D12789