Add wrap in tree list with editor

[Shourya742]

part of #15710 and #18285

[ChayimFriedman2]

This function isn't compatible with giving nodes lifetimes. So I'm fine with merging this as-is, but we'll have to change it eventually.

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[ChayimFriedman2]

Do you want me to merge this or work on what I said?

[Shourya742]

Do you want me to merge this or work on what I said?

All these methods, assists, completions, and others that depend on tree-structure edits are strongly tied to the idea of in-place edits. I initially wanted to approach this differently, but that would require significant changes to insert_use and more cognitive burder to reviewer. I am still working toward a more holistic understanding of how to better handle such cases. I am fine with merging this for now, and simultaneously gaining a clearer overview of where we have similar patterns defined and tackling them together.

[Shourya742]

@ChayimFriedman2 can we get this?