Stock 1, no input

Hello, if the stock is on 1 then no input field is displayed anymore, on the product page.
But we would like that, many code snippets from the net do not work because they overwrite the quantity-input.php.
Is there a way to set this in your plugin or do you have a snippet for this?
The customers are confused when you can no longer enter the quantity.

Greetings
B.Ebmeyer