Read marker stuck above own message

### Steps to reproduce

1. Write two messages in a room
2. Observer read marker

### Outcome

#### What did you expect?
There should be no read marker as obviously everything has been read

#### What happened instead?
There is a read marker above my last message, which completely doesn't make any sense as it is even my own message that the app believes I haven't read


This might be similar to: https://github.com/element-hq/element-x-ios/issues/639#issuecomment-1483875758

### Your phone model

Pixel 8a

### Operating system version

Android 14

### Application version and app store

0.5.2-nightly

### Homeserver

element.io

### Will you send logs?

No

### Are you willing to provide a PR?

No