Fixed Bug#35917958 - DROP EVENT DOES NOT WORK

The issue was the type of the object parameter in the event. Setting the right
object type and properly accessing the dropItem() fixed the issue.

Change-Id: I3d1cb9bc4671f9f7acac32a841cdc048b2b0527e

Author: migueltadeu

gui/extension/src/DBEditorCommandHandler.ts

@@ -49,7 +49,7 @@ import { ConnectionsTreeBaseItem } from "./tree-providers/ConnectionsTreeProvide
 import {
     CdmSchemaGroupMember,
     ConnectionsTreeDataModelEntry, ICdmConnectionEntry, ICdmRestDbObjectEntry, ICdmRoutineEntry, ICdmSchemaEntry,
-    ICdmTableEntry, ICdmTriggerEntry,
+    ICdmTableEntry, ICdmTriggerEntry, ICdmEventEntry,
 } from "./tree-providers/ConnectionsTreeProvider/ConnectionsTreeDataModel.js";
 import {
     ConnectionsTreeDataProvider,
@@ -358,8 +358,8 @@ export class DBEditorCommandHandler {
             entry?.treeItem.dropItem();
         }));
 
-        context.subscriptions.push(commands.registerCommand("msg.dropEvent", (item?: SchemaEventTreeItem) => {
-            item?.dropItem();
+        context.subscriptions.push(commands.registerCommand("msg.dropEvent", (item?: ICdmEventEntry) => {
+            item?.treeItem?.dropItem();
         }));
 
         context.subscriptions.push(commands.registerCommand("msg.defaultConnection",