Yay! While you're at it, can you look into specifying loot bags too for the right-click looting?
Hopefully those should be very similar changes.
That one's a bit trickier because of conflicts with input and issues with direct feedback to the user.
Currently, anything that is not on a corpse is subject to context menu options. And right now, to open context menus for items in a grid-view container is to right-click on it.
There's a level of abstraction involved with items, in that, the client doesn't know what items have and don't have context menus. It just blindly asks the server, "Can I have context menus for this item?" and the server will only respond back if there are any. So, even if there is some way to support both with one input, the impact will be on direct feedback. "Why is it taking so long to loot one item?"
There are some clever UI modders on here that are probably reading this that could probably alter the container lua file to exclusively do one or the other, but there will be no way to do both cleanly.