Widgets react to all mouse buttons when using Qt backend

[notfirefox]

Steps to reproduce
The issue can be reproduced on Linux using the example gallery application.

1. git clone https://github.com/slint-ui/slint
2. cd examples/gallery
3. cargo run

Expected behavior
Components such as

• Button
• Checkbox
• LineEdit
• SpinBox
• Tab

should not react with the primary action when someone presses any mouse button that is not
the left mouse button, e.g. the Button widget is not supposed to be clicked when someone right clicks.

Actual behavior
One can activate the Button using right click, one can select a Checkbox using mouse button 5, etc.

Platform
Fedora Linux 40, Rust, Qt Backend, Wayland

[ogoffart]

Thanks for filling a bug report.
Indeed in the Qt Widget we don't check the MouseEvent's button as we should in the input_event function. For example for Button, in this function

slint/internal/backends/qt/qt_widgets/button.rs

Line 246 in 0e01068

fn input_event(