Remove RefreshFrameAsync since ChangeTheme calls this function

Author: Jack251970

Flow.Launcher.Core/Resource/Theme.cs

@@ -433,7 +433,7 @@ public bool ChangeTheme(string theme = null)
 
                 BlurEnabled = IsBlurTheme();
 
-                // Can only apply blur but here also apply drop shadow effect to avoid possible drop shadow effect issues
+                // Apply blur and drop shadow effect so that we do not need to call it again
                 _ = RefreshFrameAsync();
 
                 return true;

Flow.Launcher.Plugin/Interfaces/IPublicAPI.cs

@@ -367,8 +367,10 @@ public interface IPublicAPI
         /// Set the current theme
         /// </summary>
         /// <param name="theme"></param>
-        /// <returns></returns>
-        public void SetCurrentTheme(ThemeData theme);
+        /// <returns>
+        /// True if the theme is set successfully, false otherwise.
+        /// </returns>
+        public bool SetCurrentTheme(ThemeData theme);
 
         /// Load image from path. Support local, remote and data:image url.
         /// If image path is missing, it will return a missing icon.

Flow.Launcher/PublicAPIInstance.cs

@@ -377,11 +377,8 @@ public Task ShowProgressBoxAsync(string caption, Func<Action<double>, Task> repo
 
         public ThemeData GetCurrentTheme() => Theme.GetCurrentTheme();
 
-        public void SetCurrentTheme(ThemeData theme)
-        {
+        public bool SetCurrentTheme(ThemeData theme) =>
             Theme.ChangeTheme(theme.FileNameWithoutExtension);
-            _ = _theme.RefreshFrameAsync();
-        }
 
         public ValueTask<ImageSource> LoadImageAsync(string path, bool loadFullImage = false, bool cacheImage = true) =>
             ImageLoader.LoadAsync(path, loadFullImage, cacheImage);