deactivate "skip to main content" link and dark mode

I am using one of my django instances on a display with fixed width / height, and the page is built to cover the screen 100% in fullscreen mode. This works well since many years, but due to some package update that I really needed I upgraded to django 5. Now in the admin, the “skip to main content” link destroys my layout. Can I somehow remove the “feature”? I know. I could just copay the main admin base.html into my templates/admin/ directory and remove the lines manually. But is there a smoother way?

Also, while we are at it, I want to deactivate the dark mode for the admin completely. But the tag in the base.html can only be manipulated, if I overwrite the whole file, which seems a little bit dramatic just to insert a data-theme="light" switch …?