[web] Use new handlers in communnity drawer
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Description

[web] Use new handlers in communnity drawer

Summary:
issue: https://linear.app/comm/issue/ENG-3176/make-pressing-a-drawer-item-in-chat-tab-filter-available-chats
Using in CommunityDrawerItem and CommunityDrawerItemCommunity handler implemented im previous diffs. This allows to entierly remove CommunityDrawerItemChat component, as it's only function
is now supplied by the handlers.

Test Plan:
Run web app, checked that pressing drawer items results in:

navigating to the corresponding chat, changing the list of availabe chats in ChatThreadList, and expanding the community, for community items in the Chat tab
navigating to the corresponging chat, for non-community items in the Chat tab
changing the list of available filters in the Calendar tab

some corner cases:

If the user is in a subchannel, and presses on the community, we only navigate to that community chat, since I feel it would be weird for that community to collapse in this case
If user is in the community chat and presses on that community, the community collapses, and the list of chats gets unfiltered (the filter is cleared)

Reviewers: kamil, tomek, michal

Reviewed By: tomek

Subscribers: ashoat, atul