child theme should not be counted as additional theme

[MMZx]

Child theme should be notified as sub-theme, and not additional theme. If you have installed 2 theme, like Twenty Twenty-Three and Beelove+Beelove child, WP notified it is 3 theme and in notification is:

👉Your website has 3 themes installed, in the latest versions. Your website has 1 inactive theme besides Twenty Twenty-Three, the original WordPress theme, and Beelove_Custom, your active theme.