Concept Docs: Dirty

[zurfyx]

I think it's important to explain what dirty is, especially since this is a term that's exposed to the user through markDirty but also comes up with EditorState and transforms. Also, IntentionallyMarkAsDirty

[acywatson]

Maybe more general? Reconciliation?

[and80506]

+1
I'm looking for a document about dirty.

[Nantris]

This could definitely use an update. The docs are a real pain point for anyone trying to use Lexical currently. Nobody feels fulfilled writing docs though, I know.