Selecting "Mark as read" on a room causes unread notifications to explode

### Steps to reproduce

1. To deal with https://github.com/vector-im/element-web/issues/24392, I selected "Mark as read".
2. Unread notifications started shooting up, landing in the 60s or 80s, just like in https://github.com/vector-im/element-web/issues/25479

### Outcome

#### What did you expect?

I expected the room to be marked read.

#### What happened instead?

The opposite happened. I got the red/noisy notification that between 60 and 90 direction mentions were in the room after gradually building up to the maximum.

### Operating system

Pop! OS 22.04 LTS (Ubuntu offshoot)

### Application version

Element version: 1.11.46 Olm version: 3.2.14

### How did you install the app?

Installed Flatpak via Pop Shop

### Homeserver

matrix.org

### Will you send logs?

Yes