Browser occasionally changes types of events and their fields depending on where they come from

**Problem**

The `onpointermove` event appears broken on Windows. When a component that binds to this event is present, the moment the user moves the cursor, the main thread panics with an InvalidType error.

**Steps To Reproduce**

Steps to reproduce the behavior:

- Create a component that binds to the `onpointermove` event.
- On Windows, run `dx serve --platform desktop`
- Access the component with the bound event
- Try moving the mouse
- Observe that the application crashes

**Expected behavior**

Binding to the `onpointermove` event should return an `Event` event to the event handler.

**Screenshots**

N/A

**Environment:**
- Dioxus version: 0.5.1
- Rust version: 1.78.0
- OS info: Windows 11 (22631.3527)
- App platform: desktop

**Questionnaire**

- [ ] I'm interested in fixing this myself but don't know where to start
- [ ] I would like to fix and I have a solution
- [x] I don't have time to fix this right now, but maybe later

Start by reproducing the `onpointermove` binding with `dx serve --platform desktop` on Windows and inspect the event conversion path that produces the `InvalidType` panic. Done means moving the cursor no longer crashes and the handler receives an `Event` as described.

Written by the indexing model from the issue text.