Fix null safety issues

src/components/moderation/ValidationSummary.tsx

@@ -30,9 +30,12 @@ export function ValidationSummary({ item, onValidationChange, compact = false, v
   // Helper to extract the correct entity ID based on entity type
   const getEntityId = (
     itemType: string, 
-    itemData: SubmissionItemData, 
+    itemData: SubmissionItemData | null | undefined, 
     fallbackId?: string
   ): string | undefined => {
+    // Guard against null/undefined itemData
+    if (!itemData) return fallbackId;
+    
     // Try entity-specific ID fields first
     const entityIdField = `${itemType}_id`;
     const typedData = itemData as unknown as Record<string, unknown>;
@@ -84,7 +87,7 @@ export function ValidationSummary({ item, onValidationChange, compact = false, v
       const result = await validateEntityData(
         item.item_type as ValidEntityType,
         { 
-          ...item.item_data, 
+          ...(item.item_data || {}), // Add null coalescing
           id: getEntityId(item.item_type, item.item_data, item.id)
         }
       );