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/LiveTv/TimerQuery.cs

@@ -5,26 +5,24 @@
 #nullable disable
 #pragma warning disable CS1591
 
-namespace MediaBrowser.Model.LiveTv
-{
-    public class TimerQuery
-    {
-        /// <summary>
-        /// Gets or sets the channel identifier.
-        /// </summary>
-        /// <value>The channel identifier.</value>
-        public string ChannelId { get; set; }
+namespace MediaBrowser.Model.LiveTv;
+   public class TimerQuery
+   {
+       /// <summary>
+       /// Gets or sets the channel identifier.
+       /// </summary>
+       /// <value>The channel identifier.</value>
+       public string ChannelId { get; set; }
 
-        public string Id { get; set; }
+       public string Id { get; set; }
 
-        /// <summary>
-        /// Gets or sets the series timer identifier.
-        /// </summary>
-        /// <value>The series timer identifier.</value>
-        public string SeriesTimerId { get; set; }
+       /// <summary>
+       /// Gets or sets the series timer identifier.
+       /// </summary>
+       /// <value>The series timer identifier.</value>
+       public string SeriesTimerId { get; set; }
 
-        public bool? IsActive { get; set; }
+       public bool? IsActive { get; set; }
 
-        public bool? IsScheduled { get; set; }
-    }
-}
+       public bool? IsScheduled { get; set; }
+   }