fix(treesitter): not refreshing virtualtext contents #33361

Problem: In some cases, when treesitter is enabled, deleting a
line below virtualtext will not refresh all updated lines.
https://github.com/neovim/neovim/issues/33358

Solution: Revert a part of https://github.com/neovim/neovim/pull/31324
to ensure that the full range (with virtual lines) is refreshed.

runtime/lua/vim/treesitter/highlighter.lua

@@ -237,7 +237,7 @@ end
 ---@param changes Range6[]
 function TSHighlighter:on_changedtree(changes)
   for _, ch in ipairs(changes) do
-    api.nvim__redraw({ buf = self.bufnr, range = { ch[1], ch[4] }, flush = false })
+    api.nvim__redraw({ buf = self.bufnr, range = { ch[1], ch[4] + 1 }, flush = false })
     -- Only invalidate the _conceal_checked range if _conceal_line is set and
     -- ch[4] is not UINT32_MAX (empty range on first changedtree).
     if ch[4] == 2 ^ 32 - 1 then