fix: Ensure window size and always-on-top settings are updated asynchronously

Signed-off-by: Hans Kokx <hans.d.kokx@gmail.com>

lib/main.dart

@@ -340,7 +340,10 @@ class _WinampRootState extends State<WinampRoot> {
     if (shadeChanged || scaleChanged) {
       _wasShade = _player.windowShade;
       _wasScale = _player.uiScale;
-      windowManager.setSize(_scaledSize());
+      final newSize = _scaledSize();
+      WidgetsBinding.instance.addPostFrameCallback((_) {
+        unawaited(windowManager.setSize(newSize));
+      });
       final mainRect = _dock.rectOf(DockWindow.main);
       if (mainRect != null) {
         _dock.repinResized(
@@ -359,7 +362,7 @@ class _WinampRootState extends State<WinampRoot> {
       _invokeSub(DockWindow.pl, "setUiScale", _player.uiScale);
       unawaited(_pushDockContext());
     }
-    windowManager.setAlwaysOnTop(_player.alwaysOnTop);
+    unawaited(windowManager.setAlwaysOnTop(_player.alwaysOnTop));
     if (_player.alwaysOnTop != _wasAlwaysOnTop) {
       _wasAlwaysOnTop = _player.alwaysOnTop;
       _invokeSub(DockWindow.eq, "setAlwaysOnTop", _player.alwaysOnTop);
@@ -370,7 +373,7 @@ class _WinampRootState extends State<WinampRoot> {
       if (_player.eqOpen) {
         unawaited(_openSubWindow(SubWindowType.eq));
       } else {
-        _eqController?.hide();
+        unawaited(_eqController?.hide());
       }
     }
     if (_player.plOpen != _wasPlOpen) {
@@ -378,7 +381,7 @@ class _WinampRootState extends State<WinampRoot> {
       if (_player.plOpen) {
         unawaited(_openSubWindow(SubWindowType.pl));
       } else {
-        _plController?.hide();
+        unawaited(_plController?.hide());
       }
     }
     unawaited(_syncMenuToNative());