Merge pull request #30490 from overleaf/mg-context-menu-a11y

[web] Add a11y support for context menu

GitOrigin-RevId: 3cbe66ee3ee8345dd0e89f89561928889832a50d

services/web/frontend/js/shared/components/types/dropdown-menu-props.ts

@@ -73,6 +73,8 @@ export type DropdownMenuProps = PropsWithChildren<{
   id?: string
   renderOnMount?: boolean
   popperConfig?: BS5DropdownMenuProps['popperConfig']
+  tabIndex?: number
+  onKeyDown?: (event: React.KeyboardEvent) => void
 }>
 
 export type DropdownDividerProps = PropsWithChildren<{