Disable splash screen image by default (#9060)

MediaBrowser.Model/Branding/BrandingOptions.cs

@@ -23,7 +23,7 @@ public class BrandingOptions
     /// <summary>
     /// Gets or sets a value indicating whether to enable the splashscreen.
     /// </summary>
-    public bool SplashscreenEnabled { get; set; } = true;
+    public bool SplashscreenEnabled { get; set; } = false;
 
     /// <summary>
     /// Gets or sets the splashscreen location on disk.