Got incorrect room state (stuck knock requests)

### Steps to reproduce

1. Created a room with ask-to-join access (i.e. with a `join_rule` of `knock`)
2. Many people asked to join
3. Room moderator allowed them in
4. All allowed users joined the room

### Outcome

#### What did you expect?
All of my EW clients should show no remaining people asking to join.

#### What happened instead?
One of my EW clients thinks that a few users are still asking to join. Trying to grant them access fails with `MatrixError: [403] {mxid} is already in the room. (https://{server_name}/_matrix/client/v3/rooms/{room_id}/invite)`.

Scanning the Synapse DB shows that the users really are joined, and other EW clients (which had synced incrementally) correctly see that they are joined. Logging into a new EW session (which does a full sync) also sees them as joined.

### Operating system

Fedora

### Browser information

Firefox 130.0.1 (64-bit)

### URL for webapp

https://develop.element.io/

### Application version

Element version: 11d70feb90e5-react-a1bdceed3e54-js-42ec17b97795 Crypto version: Rust SDK 0.7.2 (7a21514), Vodozemac 0.7.0

### Homeserver

Synapse v1.114.0

### Will you send logs?

Yes