fix: resets the state of adding a new panel (#3122)

Co-authored-by: Vishal Sharma <makeavish786@gmail.com>
Co-authored-by: Palash Gupta <palashgdev@gmail.com>

frontend/src/container/GridGraphLayout/index.tsx

@@ -326,6 +326,13 @@ function GridGraph(props: Props): JSX.Element {
 		errorMessage,
 	]);
 
+	useEffect(
+		() => (): void => {
+			toggleAddWidget(false);
+		},
+		[toggleAddWidget],
+	);
+
 	return (
 		<GraphLayoutContainer
 			addPanelLoading={addPanelLoading}