fix(search_headings): always get new bufnr

lua/telescope/_extensions/neorg/search_headings.lua

@@ -11,12 +11,10 @@ local neorg_loaded, _ = pcall(require, "neorg.modules")
 
 assert(neorg_loaded, "Neorg is not loaded - please make sure to load Neorg first")
 
-local bufnr = vim.api.nvim_get_current_buf()
-
-local filename = vim.fn.expand(vim.api.nvim_buf_get_name(bufnr))
-local filetype = vim.api.nvim_buf_get_option(bufnr, "filetype")
-
 return function(options)
+    local bufnr = vim.api.nvim_get_current_buf()
+    local filename = vim.fn.expand(vim.api.nvim_buf_get_name(bufnr))
+    local filetype = vim.api.nvim_buf_get_option(bufnr, "filetype")
     local opts = options
         or themes.get_dropdown({
             border = true,
@@ -68,9 +66,8 @@ return function(options)
 
         -- update to changes on Neovim master, see https://github.com/neovim/neovim/pull/19931
         -- TODO(max): remove when dropping support for Neovim 0.7
-        local on_nvim_master = vim.fn.has("nvim-0.8") == 1
         for id, node in query:iter_captures(root, opts.bufnr, 0, -1) do
-            local hl = on_nvim_master and query.captures[id] or highlighter_query:_get_hl_from_capture(id)
+            local hl = query.captures[id]
             if hl and type(hl) ~= "number" then
                 local row1, col1, row2, col2 = node:range()