Drag and Drop stopped working on 0.17-dev on Linux

## Bevy version
0.17-dev (Latest from main)

## Relevant system information

- cargo 1.88.0 (873a06493 2025-05-10)
- AxOs (6.15.8-arch1-2)

```
Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
Running `target/debug/untitled`
2025-08-07T02:04:01.376383Z INFO bevy_diagnostic::system_information_diagnostics_plugin::internal: SystemInfo { os: "Linux (AxOS 24.08)", kernel: "6.15.8-arch1-2", cpu: "AMD Ryzen 9 9950X3D 16-Core Processor", core_count: "16", memory: "62.4 GiB" }
2025-08-07T02:04:01.401271Z INFO bevy_render::renderer: AdapterInfo { name: "AMD Radeon RX 7900 XTX (RADV NAVI31)", vendor: 4098, device: 29772, device_type: DiscreteGpu, driver: "radv", driver_info: "Mesa 25.1.7-arch1.1", backend: Vulkan }
2025-08-07T02:04:01.527648Z INFO bevy_render::batching::gpu_preprocessing: GPU preprocessing is fully supported on this device.
2025-08-07T02:04:01.536568Z INFO bevy_winit::system: Creating new window untitled (0v0)
```

## What you did

Update bevy from 0.16.1 to latest main

## What went wrong

Drag and Drop doesn't work anymore from latest main, but does work in bevy 0.16.1

## Minimum reproducible

```rust
use bevy::app::{App, Update};
use bevy::DefaultPlugins;
use bevy::prelude::{EventReader, FileDragAndDrop, Res};

fn main() {
App::new()
.add_plugins(DefaultPlugins)
.add_systems(Update, handle_file_drop)
.run();
}

fn handle_file_drop(
mut events: EventReader,
) {
for event in events.read() {
if let FileDragAndDrop::DroppedFile { path_buf, .. } = event {
println!("Dropped file: {:?}", path_buf);
}
}
}
```

On bevy 0.16.1 when hovering a file over the App window, you would see a "+" Icon. When switching to latest main you will see a "Blocked" icon (Circle with a line). The `print` above is also not called when the file is dropped.

This does work on a Mac though, I've tested the same code on my Mac/Windows/Linux, seems like my Linux is the only one not working anymore.