Cannot submit `/me` command with only an emoji and user pill

[ShadowJonathan]

Steps to reproduce

Try to submit a /me command with only an emoji and username pill;

Outcome

What did you expect?

The /me command to succeed.

What happened instead?

It did not react at all to my enter key, it just stayed in the composer

Operating system

PopOS 21.10

Application version

Element version: 1.10.7 Olm version: 3.2.8

How did you install the app?

Flatpak

Homeserver

jboi.nl

Will you send logs?

Yes

[robintown]

At least part of this is regressed by matrix-org/matrix-react-sdk#7377

[robintown]

Other part regressed by matrix-org/matrix-react-sdk#7513