FPS Drop in 0.14.0 when moving mouse

## Bevy version

0.14.0

## \[Optional\] Relevant system information

```ignore
AdapterInfo { name: "Apple M1 Pro", vendor: 0, device: 0, device_type: IntegratedGpu, driver: "", driver_info: "", backend: Metal }
```

## What you did

Move mouse (without grab, not in window, just move mouse)

## What went wrong

Huge FPS drop:

## Code
```rust
fn main() {
App::new()
.add_plugins(DefaultPlugins.set(ImagePlugin::default_nearest()))
.add_plugins(ScreenDiagnosticsPlugin::default())
.add_plugins(ScreenFrameDiagnosticsPlugin)
.add_systems(Startup, setup)
.run();
}

fn setup(mut commands: Commands) {
commands.spawn((
Camera3dBundle {
transform: Transform::from_translation(Vec3::ZERO).looking_at(Vec3::ZERO, Vec3::Y),
..default()
},
));
}
```

Start by running the provided minimal reproduction with Bevy 0.14.0 on the reported Apple M1 Pro/Metal setup, comparing FPS while the mouse is still and while it moves outside the window. Trace the relevant input, window, and rendering behavior to identify the source of the frame drop. Done means moving the mouse no longer causes the reported FPS loss without breaking normal input or rendering.

Written by the indexing model from the issue text.