Sort external files when scanning

Sorts files such as external subtitles or audio as well as metadata
Useful for deterministic display in the UI.

MediaBrowser.Providers/MediaInfo/MediaInfoResolver.cs

@@ -175,12 +175,12 @@ namespace MediaBrowser.Providers.MediaInfo
                 return Array.Empty<ExternalPathParserResult>();
             }
 
-            var files = directoryService.GetFilePaths(folder, clearCache).ToList();
+            var files = directoryService.GetFilePaths(folder, clearCache, true).ToList();
             files.Remove(video.Path);
             var internalMetadataPath = video.GetInternalMetadataPath();
             if (_fileSystem.DirectoryExists(internalMetadataPath))
             {
-                files.AddRange(directoryService.GetFilePaths(internalMetadataPath, clearCache));
+                files.AddRange(directoryService.GetFilePaths(internalMetadataPath, clearCache, true));
             }
 
             if (!files.Any())