fix(#2568): hijack_cursor positions at top grouped node (#2569)

Co-authored-by: Azad <49314270+Akmadan23@users.noreply.github.com>

lua/nvim-tree.lua

@@ -124,6 +124,7 @@ function M.place_cursor_on_node()
   if not node or node.name == ".." then
     return
   end
+  node = utils.get_parent_of_group(node)
 
   local line = vim.api.nvim_get_current_line()
   local cursor = vim.api.nvim_win_get_cursor(0)

lua/nvim-tree/utils.lua

@@ -150,11 +150,10 @@ function M.get_node_from_path(path)
 end
 
 ---Get the highest parent of grouped nodes
----@param node_ Node
----@return table
-function M.get_parent_of_group(node_)
-  local node = node_
-  while node.parent and node.parent.group_next do
+---@param node Node
+---@return Node node or parent
+function M.get_parent_of_group(node)
+  while node and node.parent and node.parent.group_next do
     node = node.parent
   end
   return node