Margin on the right side of context menus

Can reproduce CR: seems like maybe padding added in response to #2500 applies to everything now? Canary Desktop 2026.602.31138, Web 2026.602.141726, Linux 7.0.10-101.fc43.x86_64 (x64), Electron 41.2.2, Chrome 146.0.7680.188, Node 24.14.1, Locale en-US