fix(treesitter): normalise end row early

Problem:
UINT32_MAX + 1 passed to vim._foldupdate.

Solution:
Normalise the erow from treesitter asap to avoid such issues.

runtime/lua/vim/treesitter/_fold.lua

@@ -126,7 +126,7 @@ end
 ---@param parse_injections? boolean
 local function compute_folds_levels(bufnr, info, srow, erow, parse_injections)
  srow = srow or 0
- erow = normalise_erow(bufnr, erow)
+ erow = erow or api.nvim_buf_line_count(bufnr)
 
  local parser = ts.get_parser(bufnr)
 
@@ -316,6 +316,7 @@ local function on_changedtree(bufnr, foldinfo, tree_changes)
  local srow_upd, erow_upd ---@type integer?, integer?
  for _, change in ipairs(tree_changes) do
  local srow, _, erow, ecol = Range.unpack4(change)
+ erow = normalise_erow(bufnr, erow)
  if ecol > 0 then
  erow = erow + 1
  end