Broken/Incomplete room state, encryption broken (sending denied)

### Steps to reproduce

1. Where are you starting? What can you see?

I received an invite, but joining the room was failing silently. I tried several times with no effect.
The day after I noticed that the room was indead there (not sure when it happened).
But I can't send any message in the room (from the console: ` Room was previously configured to use encryption, but is no longer`)
The room state is also incomplete (no topic, no admin, ..)

Here is the rageshake for more details
https://github.com/matrix-org/element-web-rageshakes/issues/7946

### Outcome

#### What did you expect?

### Operating system

_No response_

### Browser information

_No response_

### URL for webapp

_No response_

### Application version

_No response_

### Homeserver

matrix.org

### Will you send logs?

Yes