Downcast of ToggleEvent

**Problem**

The downcast of the `ToggleEvent` is not properly set, currently we get `Event`.

**Steps To Reproduce**

```rust
let on_toggle_handler = move |event: Event| {
// Will be typed as Event instead of ToggleEvent
let event = event.as_web_event();

// Will be None
let event_2 = event_data.downcast::();
}
```

**Expected behavior**

We expect the downcast to be `ToggleEvent` instead of `Event`

**Screenshots**

No applicable

**Environment:**

- Dioxus version: 0.7.0-alpha.3
- Rust version: 1.88.0
- App platform: web