Teach the firearm menu test the Weapon submenu

The categories moved under one Weapon entry, but the test still hovered
"Sidearms" straight off the context menu, so CI failed on main. It now opens
Weapon first, and the badge case checks that no Weapon entry appears.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
15e167cd71Dara Adedeji committed on 9/16/2026, 8:13:42 PMparentf9d2adf
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