Backport pull request #9060 from jellyfin/release-10.8.z

Disable splash screen image by default

Original-merge: 31673cc27d

Merged-by: Bill Thornton <thornbill@users.noreply.github.com>

Backported-by: Joshua M. Boniface <joshua@boniface.me>

MediaBrowser.Model/Branding/BrandingOptions.cs

@@ -22,7 +22,7 @@ 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.