[web] Add expanded and toggleExpanded to CommunityDrawerItemHandler type

Summary:
issue: https://linear.app/comm/issue/ENG-3176/make-pressing-a-drawer-item-in-chat-tab-filter-available-chats
Adding to handlers for drawer items expanded state. This is now kept by the wrappe of CommunityDrawerItem - CommunityDrawerItemChat. But since we need expanded to be handled by
CommunityDrawerItemCommunityHandler for CommunityDrawerItemCommunity, we will handle it in the handler for CommunityDrawerItemChat as well, for better code clarity. These fileds will ne
used in the next diff.

Test Plan: texted with the next diff

Reviewers: kamil, tomek, michal

Reviewed By: tomek

Subscribers: ashoat, atul

Differential Revision: https://phab.comm.dev/D6975