there can be threads with only reactions

[HarHarLinks]

When the user clicks "Start a thread" but chooses not to type and send a response, instead they add a reaction to the root message, the reactions only show in the Thread panel, not in the main timeline.
Adding an emoji reaction to the root message also stops the latest message in the thread from showing up in the thread summary

Reactions added to root messages in the thread timeline should show in the main timeline. Emoji reactions to the root message should not disrupt the summary

---

Original Issue content:

Steps to reproduce

1. write a message
2. click start thread
3. only send reactions to the root

Outcome

What did you expect?

it shouldn't be a thread before another message is sent

Alternative solution

I consider this more ugly, but if you decide that it should be a thread, then at least there should be a thread summary that shows the last reaction

What happened instead?

it is a thread

see also

#20848

Operating system

arch

Application version

Element Nightly version: 2022020101 Olm version: 3.2.8

How did you install the app?

aur

Homeserver

1.51

Will you send logs?

No

[HarHarLinks]

Apparently this doesn't appear as a thread for the other person in my DM at all. Instead: #20850

[germain-gg]

This has been fixed as part of the worked carried out of associated events for polls

Screen.Recording.2022-02-22.at.15.32.53.mov