9.2
tsconfig: Enable noUncheckedIndexedAccess.
web: Move web app to ‘web’ directory.
ts: Convert `internal_url.js` to TypeScript.
docs: Update CZO links from stream to channel in docs and comments.
submessage: Fix implicit use of any.
ts: Convert resolved_topic.js to TypeScript.
typeahead: Rework `sort_emojis` function.
typing_status: Use TypeScript unions for 'Recipient' type.
typing_status: Add an extra notification_event_type to Recipients.