field shadows event name

// Test 408: Field name that shadows event name
//
// BUG: When an input field has the same name as the event,
// the unwrapping code `const window = e.window;` shadows the
// event struct `pub const window = struct`.

const std = @import("std");

~event window { window: i32 }
| success i32

~proc window|zig {
    std.debug.print("Window size: {d}\n", .{window});
    return .{ .success = window * 2 };
}

// Invoke the event
~window(window: 42)
| success _ |> _