Reorganize edit prediction code and remove old experiments (#44187)

Release Notes:

- N/A

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Co-authored-by: Agus Zubiaga <agus@zed.dev>
Co-authored-by: Ben Kunkle <ben@zed.dev>
42583c1141Max Brunsfeld committed on 12/4/2025, 11:56:57 PM· committed by GitHubparent7616710
64 files changedLine totals unavailable