Ignore fav tab when selling to NPC

Suggestions
1

Imported from legacy Flarum.
Original author: judedaryl (Flarum #652)

Fav tab is ignored during storeall, but it would be nice if it was ignored when selling to an npc too.

2

Imported from legacy Flarum.
Original author: Aqua (Flarum #629)

Click on this button.