This caused undesirable and unnecessary scrolling, in that if you scroll
up, then as new messages stream into the panel, they jump the scroll bar
back down.

@agu-z and I paired on this and we think this is unnecessary now that we
don't see the Edit button in the UI, but @bennetbo we still see code for
the button in there, so...maybe we do still want this? (If so, we can
revert the second commit and go back to a more conditional way of
scrolling. 😄)

Release Notes:

- N/A

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Co-authored-by: Agus <agus@zed.dev>