fix adaptive diff window row on height changes

If the diff window stack upwards, it will changes its window position
(i.e. the row) of the diff changes between the selected actions. Though
these changes got never correctly applied after the first diff window
got opened. This fix makes sure that any changes in window configuration
does take affect.

lua/code_action_menu/windows/base_window.lua

@@ -87,9 +87,9 @@ function BaseWindow:open(window_configuration_options)
     )
     self.window_options = vim.api.nvim_win_get_config(self.window_number)
     vim.api.nvim_command('doautocmd User CodeActionMenuWindowOpened')
+  else
+    vim.api.nvim_win_set_config(self.window_number, window_configuration)
   end
-
-  vim.api.nvim_win_set_height(self.window_number, window_configuration.height)
 end
 
 function BaseWindow:get_option(name)