Room appears as having unread messages when a user is invited to it

### Steps to reproduce

When a user is invited to a room by our adminbot (**not** when they join by themselves) the room gets a timeline event which is treated as an unread message:

> adminbot invited user1234

The option `Show join/leave messages (invites/removes/bans unaffected)` is disabled and this still happens.

### Outcome

#### What did you expect?

That when an user is invited to a channel, the timeline event is not treated as a unread message.

#### What happened instead?

I have an unread message in the room for the timeline event.

#### What the main problem?

This is quite frustrating as we have many channels (15+) that we automatically add users when they join our server, but this makes it impossible to know where we have new messages vs where it is just a timeline event.

#### Suggestion

Allow to remove invites from timeline events.

### Operating system

MacOS - M1

### Application version

1.11.31

### How did you install the app?

_No response_

### Homeserver

_No response_

### Will you send logs?

No