Core Forms 4.2.0-beta4
Pre-release. Quick UI consistency fix on top of v4.2.0-beta3.
What changed
Removed the `body.toplevel_page_core-forms .notice` CSS override in `design-system.css` that gave admin notices on Core Forms screens a rounded 4px-left-bar look. Notices now match WordPress's native styling exactly — squared corners, native left border, no plugin-flavored variation.
The Import page's custom `.cf-import__flash` flash variants were also swapped for native `.notice .notice-success` / `.notice-warning`, and the orphaned CSS rules removed.
Carries over everything from v4.2.0-beta3 (WhatsApp picker, headless referer fix, Import page redesign, prominent Display mode card).