Login form - forgot button


I would like to disable the forgot button on the login form.

I found a promising place in login-form.html.twig
There is a test of {% if page.header.form.login.forgot_button ?? true %}
which would remove it.
But I am clueless as to where and how I could change that variable to false?

I have also failed to find out where in the admin that button comes from.

Any ideas?