Bug fixes:
- IncomingCallNotification: track ring setTimeout ID and clear it on
cleanup/dismiss — prevents orphaned callbacks after unmount
- RoomTimeline: allow redacted m.room.message, m.room.encrypted and
m.sticker events past the early-return filter so they hit the
existing RedactedContent renderer showing the trash-icon placeholder
New features:
- PollContent component: read-only display of m.poll.start and
org.matrix.msc3381.poll.start events (both stable Matrix 1.7 and
MSC3381 unstable content keys); renders poll question + answer
options inside the standard Message bubble; registered both as
top-level event renderers and inside EncryptedContent callback
so encrypted polls also render after decryption
- Deleted message placeholder: m.room.message and m.room.encrypted
redacted events now show the existing MessageDeletedContent
component (trash icon + italic notice) instead of disappearing
entirely — matches Element, FluffyChat, Commet, Nheko behaviour
root