[web] Update notice in a thread when user blocked target
[web] Update notice in a thread when user blocked target

Test Plan: Check if in thread with target user blocked new notice is displayed

Reviewers: ashoat, palys-swm

Reviewed By: ashoat

Subscribers: zrebcu411, Adrian

Differential Revision: https://phabricator.ashoat.com/D423

Ashoat/squadcal,Ashoat/squadcal,Ashoat/squadcal,Ashoat/squadcal,Ashoat/squadcal,Ashoat/squadcal,Ashoat/squadcal