The `General` settings layout can be disabled by unchecking `use_custom_props`,
an since this button button is within this layout it can't be activated back.
NOTE: See that the button can be activated back if the checkbox is still
hovered after being unchecked, if the mouse moves out it can't be enabled back.
Pull Request: https://projects.blender.org/blender/blender/pulls/140228
a8fdecc0a8