fix drag/drop event triggers

Author: raheeliftikhar5

client/packages/lowcoder-comps/src/comps/calendarComp/calendarComp.tsx

@@ -845,7 +845,7 @@ let CalendarBasicComp = (function () {
       updateEventsOnDragOrResize(eventInfo.event);
 
       if (typeof props.onDropEvent === 'function') {
-        props.onDropEvent("dropEvent");
+        props.onDropEvent("drop");
       }
     }, [props.onDropEvent, updateEventsOnDragOrResize]);
 
@@ -959,6 +959,11 @@ let CalendarBasicComp = (function () {
                 props.onEvent("change");
               }
             }}
+            eventDragStart={() => {
+              if (typeof props.onDropEvent === 'function') {
+                props.onDropEvent("drag");
+              }
+            }}
             eventDrop={handleDrop}
             eventResize={handleResize}
           />