Called when the player's cursor leaves a LuaGuiElement that was previously hovered.
Only fired for events whose LuaGuiElement::raise_hover_events is true.
element: LuaGuiElement — The element that was being hovered.player_index: uint32 — The player whose cursor was hovering.name: defines.events — Identifier of the eventtick: uint32 — Tick the event was generated.