fix(files): Handle empty line on Neovim 0.12.3 in set_text

Author: kristijanhusak

lua/orgmode/files/file.lua

@@ -11,7 +11,7 @@ local Footnote = require('orgmode.objects.footnote')
 local Memoize = require('orgmode.utils.memoize')
 local Buffers = require('orgmode.state.buffers')
 
-local is_nightly = vim.fn.has('nvim-0.13') == 1
+local clean_empty_line = vim.fn.has('nvim-0.13') == 1 or vim.fn.has('nvim-0.12.3') == 1
 
 ---@class OrgFileMetadata
 ---@field mtime number File modified time in nanoseconds
@@ -503,7 +503,7 @@ function OrgFile:get_node_text(node, range)
 
   local _, _, _, end_col = node:range()
   local text = ts.get_node_text(node, self:get_source(), opts)
-  if is_nightly and end_col == 0 and text:sub(-1) == '\n' then
+  if clean_empty_line and end_col == 0 and text:sub(-1) == '\n' then
     return text:sub(1, -2)
   end
   return text