9.5.2 breaks stripe webform

add file with node number

Isn't this what the Drupal once library is for? You could use that.

See [#3158256]

Sure, it does seem like a usecase for once(), however it was late and I couldn't figure out the syntax.
The current patch, on the other hand, is readable and works.

This feels like a case of "don't let perfect be the enemy of good".

NW to use Drupal once per #3.