Allow absolute path mismatch when getting virtual folder info

We have historically required the path stored in the database to exactly match the actual path on the filesystem to retrieve virtual folder information, dating back to the Emby era. However, this approach can cause issues when symbolic links are involved, as the link path may differ from the actual pointed path. To address this, allow matching based solely on the folder name when absolute path checking fails, mitigating such problems.

Signed-off-by: gnattu <gnattuoc@me.com>

Emby.Server.Implementations/Library/LibraryManager.cs

@@ -1152,11 +1152,11 @@ namespace Emby.Server.Implementations.Library
             var refreshQueue = includeRefreshState ? ProviderManager.GetRefreshQueue() : null;
 
             return _fileSystem.GetDirectoryPaths(_configurationManager.ApplicationPaths.DefaultUserViewsPath)
-                .Select(dir => GetVirtualFolderInfo(dir, topLibraryFolders, refreshQueue))
+                .Select(dir => GetVirtualFolderInfo(dir, topLibraryFolders, refreshQueue, true))
                 .ToList();
         }
 
-        private VirtualFolderInfo GetVirtualFolderInfo(string dir, List<BaseItem> allCollectionFolders, HashSet<Guid>? refreshQueue)
+        private VirtualFolderInfo GetVirtualFolderInfo(string dir, List<BaseItem> allCollectionFolders, HashSet<Guid>? refreshQueue, bool allowAbsolutePathMismatch = false)
         {
             var info = new VirtualFolderInfo
             {
@@ -1184,6 +1184,12 @@ namespace Emby.Server.Implementations.Library
             };
 
             var libraryFolder = allCollectionFolders.FirstOrDefault(i => string.Equals(i.Path, dir, StringComparison.OrdinalIgnoreCase));
+            if (libraryFolder is null && allowAbsolutePathMismatch)
+            {
+                _logger.LogWarning("Absolute path does not match any virtual folder, guessing from folder name");
+                libraryFolder = allCollectionFolders.FirstOrDefault(i => string.Equals(Path.GetDirectoryName(i.Path), Path.GetDirectoryName(dir), StringComparison.OrdinalIgnoreCase));
+            }
+
             if (libraryFolder is not null)
             {
                 var libraryFolderId = libraryFolder.Id.ToString("N", CultureInfo.InvariantCulture);