Backport pull request #11802 from jellyfin/release-10.9.z

Mark SearchHint.MatchedTerm as nullable

Original-merge: ab6c2424db

Merged-by: Bond-009 <bond.009@outlook.com>

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

MediaBrowser.Model/Search/SearchHint.cs

@@ -43,7 +43,7 @@ namespace MediaBrowser.Model.Search
         /// Gets or sets the matched term.
         /// </summary>
         /// <value>The matched term.</value>
-        public string MatchedTerm { get; set; }
+        public string? MatchedTerm { get; set; }
 
         /// <summary>
         /// Gets or sets the index number.