Emoji autocomplete delay is too high by default

### Steps to reproduce

Type `:blus` fast, where `` is simply the TAB key.

### Outcome

#### What did you expect?

I expected `:blus` to insert the :blush: emoji in the chat input bar.

#### What happened instead?

I can see `:blus` written in the input bar, with a pop-over with one emoji autocomplete suggestion only (`:blush:`), but the `` key was forgotten/ignored.

Overall, it felt too slow to respond, when compared to other services like Telegram or Google Meet, where the autocomplete feels instantaneous and `:blus` would always insert :blush: no matter how fast you type.

### Operating system

_No response_

### Application version

1.9.0

### How did you install the app?

dl.flathub.org

### Homeserver

_No response_

### Will you send logs?

No