Reward function in advancements should execute at the triggers position

Some advancement triggers may benefit if the reward function would execute (or have an option to) at the trigger's position.

Applicable triggers:

• bee_nest_destroyed: position of the bee nest.
• bred_animals: position of the baby.
• brewed_potion: position of the brewing stand.
• channeled_lightning: position of the hit entity.
• construct_beacon: position of the beacon.
• cured_zombie_villager: position of the villager
• enchanted_item: position of the enchanting table.
• entity_hurt/killed_player: position of the source_entity.
• player_hurt/killed_entity: position of the entity.
• filled_bucket: position of the fluid/entity.
• fishing_rod_hooked: position of the fishing bobber.
• item_used_on_block: position of the block.
• placed_block: position of the block.
• player_generates_container_loot: position of the container.
• summoned_entity: position of the entity.
• tame_animal: position of the animal.
• target_hit: position of the target block.
• thrown_item_picked_up_by_entity: position of the entity.
• villager_trade: position of the villager.