Accessibility: Bundle functionality is reduced for players unable to use a scrollwheel

As of 24w35a, players who can't effectively use a scrollwheel (whether due to player disability or just broken/missing hardware) are able to remove only the very "topmost"/newly added item from a bundle, while players who are able to use a working scrollwheel may choose freely from the topmost 8-12 items.

What I expected to happen was...:

Controls for cycling through items would be remappable, like nearly all other controls, through the Options... > Controls... menu.

(Recommendation - Add "Cycle [Next/Previous] Item" keybinds. PgDn/PgUp, [/], and ,/., and -/= all seem like sensible default pairs that are currently unused, though I think Not Bound by default would be fine too. As a bonus, these could also be used to cycle through the hotbar, but that's less important since the Hotbar Slot N keybinds already exist.)

What actually happened was...:

Players like me can remove only the very topmost item from a bundle, making bundles much less useful than they are to other players.

Steps to Reproduce:

Try playing with any of the following conditions (take your pick!):

• A mouse with no scrollwheel
• A mouse with a broken scrollwheel
• Scroll Sensitivity turned down to minimum
• Your mousing hand's fingers splinted into a Vulcan salute 🖖