Fix search terms using diacritics (#15435)

Jellyfin.Server.Implementations/Item/BaseItemRepository.cs

@@ -1701,15 +1701,16 @@ public sealed class BaseItemRepository
 
         if (!string.IsNullOrEmpty(filter.SearchTerm))
         {
-            var searchTerm = filter.SearchTerm.ToLower();
-            if (SearchWildcardTerms.Any(f => searchTerm.Contains(f)))
+            var cleanedSearchTerm = GetCleanValue(filter.SearchTerm);
+            var originalSearchTerm = filter.SearchTerm.ToLower();
+            if (SearchWildcardTerms.Any(f => cleanedSearchTerm.Contains(f)))
             {
-                searchTerm = $"%{searchTerm.Trim('%')}%";
-                baseQuery = baseQuery.Where(e => EF.Functions.Like(e.CleanName!.ToLower(), searchTerm) || (e.OriginalTitle != null && EF.Functions.Like(e.OriginalTitle.ToLower(), searchTerm)));
+                cleanedSearchTerm = $"%{cleanedSearchTerm.Trim('%')}%";
+                baseQuery = baseQuery.Where(e => EF.Functions.Like(e.CleanName!, cleanedSearchTerm) || (e.OriginalTitle != null && EF.Functions.Like(e.OriginalTitle.ToLower(), originalSearchTerm)));
             }
             else
             {
-                baseQuery = baseQuery.Where(e => e.CleanName!.ToLower().Contains(searchTerm) || (e.OriginalTitle != null && e.OriginalTitle.ToLower().Contains(searchTerm)));
+                baseQuery = baseQuery.Where(e => e.CleanName!.Contains(cleanedSearchTerm) || (e.OriginalTitle != null && e.OriginalTitle.ToLower().Contains(originalSearchTerm)));
             }
         }