fix(unmount): add destroyed flag, prevent apply change when component… (#3553)

* fix(unmount): add destroyed flag, prevent apply change when component has been destroyed.

* style(format): update format

* refactor(unmount): remove destroyed flag, use effect return callback to destroy onchange event

* styles(format): format styles

Co-authored-by: wangchao <wangchao08@kuaishou.com>

packages/slate-react/src/components/slate.tsx

@@ -1,4 +1,4 @@
-import React, { useMemo, useState, useCallback } from 'react'
+import React, { useMemo, useState, useCallback, useEffect } from 'react'
 import { Node } from 'slate'
 
 import { ReactEditor } from '../plugin/react-editor'
@@ -34,6 +34,12 @@ export const Slate = (props: {
 
   EDITOR_TO_ON_CHANGE.set(editor, onContextChange)
 
+  useEffect(() => {
+    return () => {
+      EDITOR_TO_ON_CHANGE.set(editor, () => {})
+    }
+  }, [])
+
   return (
     <SlateContext.Provider value={context}>
       <EditorContext.Provider value={editor}>