Fix crop bounding box logic to use most frequent crop (mode) instead of bounding box

JellyfinPlugin/CropHelper.cs

@@ -44,34 +44,9 @@ namespace JellyfinPlugin
 
             if (totalFrames == 0) return string.Empty;
 
-            var validCrops = crops.Where(kvp => (double)kvp.Value / totalFrames > 0.05).ToList();
-            if (!validCrops.Any())
-            {
-                validCrops = crops.OrderByDescending(kvp => kvp.Value).Take(1).ToList();
-            }
+            var bestCrop = crops.OrderByDescending(kvp => kvp.Value).FirstOrDefault().Key;
             
-            int minX = int.MaxValue, minY = int.MaxValue, maxXW = 0, maxYH = 0;
-
-            foreach (var kvp in validCrops)
-            {
-                var parts = kvp.Key.Split(':');
-                if (parts.Length == 4 && 
-                    int.TryParse(parts[0], out int w) && int.TryParse(parts[1], out int h) &&
-                    int.TryParse(parts[2], out int x) && int.TryParse(parts[3], out int y))
-                {
-                    minX = Math.Min(minX, x);
-                    minY = Math.Min(minY, y);
-                    maxXW = Math.Max(maxXW, x + w);
-                    maxYH = Math.Max(maxYH, y + h);
-                }
-            }
-
-            int finalW = maxXW - minX;
-            int finalH = maxYH - minY;
-
-            if (finalW <= 0 || finalH <= 0) return string.Empty;
-
-            return $"{finalW}:{finalH}:{minX}:{minY}";
+            return bestCrop ?? string.Empty;
         }
     }
 }