fix(preview): update buffer previewer to upstream changes

[clason]

neovim/neovim#19931 removed _get_hl_from_capture(id) since captures are now implicitly mapped to highlight groups with the same name.

Fixes #2149

(PSA: "Neovim master" always means "latest HEAD" -- this will intentionally break on older nightlies.)

[Conni2461]

Thanks :) Tested it, seems to work. Just a small nit, that might be worth fixing, after that we can merge.

(PSA: "Neovim master" always means "latest HEAD" -- this will intentionally break on older nightlies.)

We say: "Neovim (v0.7.0) or the latest neovim nightly commit is required for telescope.nvim to work." so i am fine with that

(Maybe that should say 0.7.2 or 0.7.*, haven't updated our readme since the last release 😆)

[clason]

As long as we're agreed that we only support the latest release and the latest commit on master :)

By the way, there's a has('nvim-0.7') check at the top of this file -- isn't that redundant with the one in plugin/telescope.lua?

[Conni2461]

By the way, there's a has('nvim-0.7') check at the top of this file -- isn't that redundant with the one in plugin/telescope.lua?

Yeah i also noticed this, but for some recent never removed it 😬

Thanks again :)