While there is no such hard-coded function in the Cool VL Viewer, there is indeed a way, via
Lua scripting...
Add (or merge, if you already make use of the
OnNotification() callback) this code to your automation.lua script:
Re-load the automation script from the "Advanced" -> "Lua" menu and enjoy.
It is even better than what a hard-coded feature could offer, because, as in this example, you can restrict it to a given list of locations (I used the sim names here, but you could restrict to parcels only: have a look at what data
GetGridSimAndPos() offers), or you could even restrict it to some avatars (in
OnNotification(name, id, message), 'message' contains the text of the inventory offer dialog, and it is in the form '<First_name> <Last_name> has given you a object named <something>')...
Note that there is a little trick, here, since
ScriptDialogResponse() was designed and is documented to reply to script dialogs. However, it will work just as well for other dialogs.