Admin nav menu "Open link in a new window/tab" incorrect size on max-width: 782px

[tyxla]

When on a mobile device (max-width: 782px), the "Open link in a new window/tab" checkbox in an expanded menu item in Appearance -> Menus has incorrect styling. It expands to 100% width, which is incorrect, and its height is incorrect as well. Some additional styling needs to be applied for checkboxes and the eventual radio buttons inside the menu item settings box.

[tyxla]

Fixing the size of radio buttons / checkboxes in menu item settings in the administration for max-width: 782px

[SergeyBiryukov]

Could you add before/after screenshots?

[tyxla]

Attaching a before/after image, showing the issue (before the patch), and the fixed issue (after the patch).

[SergeyBiryukov]

In 31523:

Menus: Prevent checkboxes and radio buttons from being stretched to full width on mobile.

props tyxla.
fixes #31425.