Add support for header menu items.
Review Request #14422 — Created May 4, 2025 and submitted — Latest diff uploaded
Header menu items are used as a descriptive label above a series of
menu items. They can help bring context to items within a menu. They
can't be interactive with, and effectively function as separators.
Unit tests pass.
Made attempts to select header menu items and invoke them. They
didn't provide any interaction or cause any issues with navigation
or event handling.