chore: install @vant/use

src/calendar/components/Month.js

@@ -16,8 +16,8 @@ import {
 } from '../utils';
 
 // Composition
+import { useToggle } from '@vant/use';
 import { useHeight } from '../../composition/use-rect';
-import { useToggle } from '../../composition/use-toggle';
 import { usePublicApi } from '../../composition/use-public-api';
 
 // Components

src/composition/use-toggle.ts

@@ -1,10 +0,0 @@
-import { ref } from 'vue';
-
-export function useToggle(defaultValue = false) {
-  const state = ref(defaultValue);
-  const setState = (value: boolean) => {
-    state.value = value;
-  };
-
-  return [state, setState];
-}