[lib][native][web] send encrypted dms on web and native when deleting on thick threads

Summary:
Sends encrypted dms when deleting entries in a thick thread

Depends on D13344

Test Plan: test plan similar as previous. Four platforms with two accounts in-between them all in a thick thread. Deleted entries and confirmed they deleted on all four platforms

Reviewers: marcin, tomek, ashoat

Reviewed By: tomek

Differential Revision: https://phab.comm.dev/D13345