Suppress unused warning on announce() accessibility helper

src/ui/widgets.rs

@@ -156,6 +156,7 @@ pub fn copy_button(text_to_copy: &str, toast_overlay: Option<&adw::ToastOverlay>
 /// Inserts a hidden label with AccessibleRole::Alert into the given container,
 /// which causes AT-SPI to announce the text to screen readers.
 /// The label auto-removes after a short delay.
+#[allow(dead_code)]
 pub fn announce(container: &impl gtk::prelude::IsA<gtk::Widget>, text: &str) {
     let label = gtk::Label::builder()
         .label(text)