fix(comp:tree): correct param checked of onCheck

`checked` should  be the state of check operation instead of state of node

packages/components/tree/src/composables/useCheckable.ts

@@ -12,9 +12,9 @@ import { isNil } from 'lodash-es'
 import { type VKey, callEmit, useControlledProp } from '@idux/cdk/utils'
 import { type CascaderStrategy } from '@idux/components/cascader'
 
-import { type MergedNode } from './useDataSource'
 import { type TreeNode, type TreeProps } from '../types'
 import { callChange, getChildrenKeys, getParentKeys } from '../utils'
+import { type MergedNode } from './useDataSource'
 
 export interface CheckableContext {
   checkedKeys: WritableComputedRef<VKey[]>
@@ -80,14 +80,15 @@ export function useCheckable(props: TreeProps, mergedNodeMap: ComputedRef<Map<VK
     const cascaderEnabled = cascaderStrategy !== 'off'
     const childrenKeys = cascaderEnabled ? getChildrenKeys(node, disabledKeys) : []
     const index = allCheckedKeys.value.indexOf(currKey)
-    const checked = index > -1
+
     let tempKeys = [...allCheckedKeys.value]
 
-    if (
-      checked ||
-      (childrenKeys.length &&
+    const checked =
+      index > -1 ||
+      (!!childrenKeys.length &&
         childrenKeys.every(key => tempKeys.includes(key) || indeterminateKeys.value.includes(key)))
-    ) {
+
+    if (checked) {
       const parentKeys = cascaderEnabled ? getParentKeys(nodeMap, node, disabledKeys) : []
       tempKeys.splice(index, 1)
       tempKeys = tempKeys.filter(key => !parentKeys.includes(key) && !childrenKeys.includes(key))