Problem:
Since 2f6d1d3c88, `apply_text_edits`
unconditionally sets `buflisted=true`, causing spurious BufDelete events
if plugins restore the original 'buflisted' state on unlisted buffers:
65ef6cec1c/src/nvim/option.c (L2159-L2169)
Solution:
- Don't set 'buflisted' in `apply_text_edits`. Set it more narrowly, in
`apply_workspace_edit` where the semantics requires affected buffers
to be visible to the user.
- Also skip setting 'buflisted' if it would not be changed, to avoid
redundant `OptionSet` events.