feat: switch to new dialog gutter

app/routes/users/dialogs/add.tsx

@@ -45,14 +45,14 @@ export default function Add({ magic }: Props) {
 								state={[username, setUsername]}
 								className="my-2"
 							/>
-							<div className="mt-6 flex justify-end gap-2 mt-6">
+							<Dialog.Gutter>
 								<Dialog.Action variant="cancel" onPress={close}>
 									Cancel
 								</Dialog.Action>
 								<Dialog.Action variant="confirm" onPress={close}>
 									Create
 								</Dialog.Action>
-							</div>
+							</Dialog.Gutter>
 						</Form>
 					</>
 				)}