I'm trying to add the placeholder attribute to the username and password input fields of the user login block.
When I have twig debug on, the only twig file overrides list are the following.
<!-- FILE NAME SUGGESTIONS: * input--textfield.html.twig x input.html.twig -->
I don't want to use either of these twig files as it would apply to every input or every textfield.
I'm wanting to accomplish this from within my theme not a custom module. Which I'm not sure is able to be done.