[RFC] Add prev editor state for mutation listener

[fantactuka]

This one should allow access for deleted nodes state using prev editor state:

editor.registerMutationListener(
  SomeNode,
  (mutations, {prevEditorState}) => {
    for (const [key, type] of mutations.entries()) {
      if (type === 'destroyed') {
      	const destroyedNode = prevEditorState.read(() => $getNodeByKey<LexicalNode>(key));
		...
      }
    }
  },
)

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
lexical	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jul 17, 2023 8:43pm
lexical-playground	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jul 17, 2023 8:43pm

[github-actions]

size-limit report 📦

Path	Size	Loading time (3g)	Running time (snapdragon)	Total time
packages/lexical/dist/Lexical.js	27.97 KB (+0.04% 🔺)	560 ms (+0.04% 🔺)	351 ms (+26.61% 🔺)	910 ms
packages/lexical-rich-text/dist/LexicalRichText.js	39.03 KB (+0.03% 🔺)	781 ms (+0.03% 🔺)	386 ms (-18.82% 🔽)	1.2 s
packages/lexical-plain-text/dist/LexicalPlainText.js	39.01 KB (+0.03% 🔺)	781 ms (+0.03% 🔺)	388 ms (+3.33% 🔺)	1.2 s