Refactor: standardize namespace and using directive style

Refactored all C# test files to use explicit namespace declarations and moved all using directives inside the namespace block for consistency. Updated assembly info and cache files to reflect the new build. Adjusted MvcTestingAppManifest.json to use fully qualified assembly names. No functional changes; all updates are related to code style, organization, and project metadata.

MediaBrowser.Model/Configuration/EncodingOptions.cs

@@ -5,7 +5,7 @@
 #pragma warning disable CA1819 // XML serialization handles collections improperly, so we need to use arrays
 
 #nullable disable
-using System.ComponentModel;
+using global::System.ComponentModel;
 using MediaBrowser.Model.Entities;
 
 namespace MediaBrowser.Model.Configuration;
@@ -30,6 +30,7 @@ public class EncodingOptions
         EnableSegmentDeletion = false;
         SegmentKeepSeconds = 720;
         EncodingThreadCount = -1;
+
         // This is a DRM device that is almost guaranteed to be there on every intel platform,
         // plus it's the default one in ffmpeg if you don't specify anything
         VaapiDevice = "/dev/dri/renderD128";
@@ -53,6 +54,7 @@ public class EncodingOptions
         EnableDecodingColorDepth10Vp9 = true;
         EnableDecodingColorDepth10HevcRext = false;
         EnableDecodingColorDepth12HevcRext = false;
+
         // Enhanced Nvdec or system native decoder is required for DoVi to SDR tone-mapping.
         EnableEnhancedNvdecDecoder = true;
         PreferSystemNativeHwDecoder = true;