Stop OE connection spinner when user closes connection dialog (#2777)

src/sql/parts/connection/connectionDialog/connectionDialogService.ts

@@ -153,6 +153,9 @@ export class ConnectionDialogService implements IConnectionDialogService {
 			} else {
 				this._connectionManagementService.cancelConnection(this._model);
 			}
+			if (params && params.input && params.input.onConnectCanceled) {
+				params.input.onConnectCanceled();
+			}
 			this._connectionDialog.resetConnection();
 			this._connecting = false;
 		}