[keyserver] Mark recalculateAllThreadPermissions as deprecated

Summary: https://linear.app/comm/issue/ENG-4318/mark-recalculateallthreadpermissions-as-deprecated.

Test Plan: Check if function DEPRECATED_recalculateAllThreadPermissions exists in keyserver/src/updaters/thread-permission-updaters.js

Reviewers: bartek, tomek, ashoat

Reviewed By: ashoat

Subscribers: ashoat, tomek

Differential Revision: https://phab.comm.dev/D8437