{{!-- !-- Render an item list header row. !-- If the partial is called with a partial block, the partial block !-- content is inserted before the description heading. !-- @param isEquipable: A flag to enable the equipped column. !-- @param hasQuantity: A flag to enable the quantity column. !-- @param hideDescription: A flag to disable the description column. !-- @param @partial-block: Custom column headers can be passed using the partial block. --}}