Full Backpack drops item instead of placing it in cursor

When an inventory is completely full, any new items get placed in the mouse cursor, or dropped. When wearing a backpack, the backpack tries to take any new items, but fails and drops the items, even if the mouse cursor can hold the item.

This doesn't cause any visible issue with most items, but it causes erronous "ondropped" calls.

It is really easy to fix, I swear:

In the following snippets, the "drop_on_fail" parameter should be defined as "false", because inventory handles that later.

components/inventory.lua:756  elseif overflow ~= nil and overflow:GiveItem(inst, nil, src_pos) then
components/container.lua:177  function Container:GiveItem(item, slot, src_pos, drop_on_fail)