fix: request redraw on hover state change in dropdown widget

This also add a missing request when dropdown opens

src/widget/dropdown/menu/mod.rs

@@ -508,6 +508,21 @@ where
                     }
 
                     *hovered_guard = Some(new_hovered_option);
+                } else {
+                    let mut hovered_guard = self.hovered_option.lock().unwrap();
+
+                    if hovered_guard.is_some() {
+                        *hovered_guard = None;
+                        shell.request_redraw();
+                    }
+                }
+            }
+            Event::Mouse(mouse::Event::CursorLeft) => {
+                let mut hovered_guard = self.hovered_option.lock().unwrap();
+
+                if hovered_guard.is_some() {
+                    *hovered_guard = None;
+                    shell.request_redraw();
                 }
             }
             Event::Touch(touch::Event::FingerPressed { .. }) => {

src/widget/dropdown/multi/menu.rs

@@ -395,6 +395,15 @@ where
                     if *self.hovered_option != previous_hover_option {
                         shell.request_redraw();
                     }
+                } else if self.hovered_option.is_some() {
+                    *self.hovered_option = None;
+                    shell.request_redraw();
+                }
+            }
+            Event::Mouse(mouse::Event::CursorLeft) => {
+                if self.hovered_option.is_some() {
+                    *self.hovered_option = None;
+                    shell.request_redraw();
                 }
             }
             Event::Touch(touch::Event::FingerPressed { .. }) => {

src/widget/dropdown/widget.rs

@@ -567,6 +567,7 @@ pub fn update<
                 state: &mut State,
                 on_selected: Arc<dyn Fn(usize) -> Message + Send + Sync + 'static>| {
         state.is_open.store(true, Ordering::Relaxed);
+        shell.request_redraw();
         let mut hovered_guard = state.hovered_option.lock().unwrap();
         *hovered_guard = selected;
         let id = window::Id::unique();