fix: update validation logic to prevent update date from being earlier than start date for incident events

Author: Aloento

src/Components/Event/useEditForm.ts

@@ -138,7 +138,7 @@ export function useEditForm(event: Models.IEvent) {
   function setUpdateAt(value = updateAt) {
     let err: boolean = false;
 
-    if (type !== EventType.Maintenance && value && value < start) {
+    if (IsIncident(type) && value && value < start) {
       setValUpdateAt("Update Date cannot be earlier than Start Date.");
       err = true;
     }