🐛 SubMenu unexpected scrollbar

Editor assessment

The subject `fix: 🐛 SubMenu unexpected scrollbar` names the component and the defect — an unexpected scrollbar — with the bug emoji serving as a tolerated stylistic marker in the description. The fix type fits, and a Menu or SubMenu scope would be nice though the component is named. The body is absent, justified for a small visual defect, and the `close #26812` footer is well-formed, connecting the change to its report. No junk, no trailing period. Compact, clear, and traceable.