[MC-279636] Item entities with "bundle_contents" component don't drop items if not a bundle

Item entities with "bundle_contents" component only drop items when destroyed if they are a bundle, this is inconsistent with the "container" component which will drop it's items in most cases.

To Confirm

/give @s bundle[minecraft:bundle_contents=[{count:1, id:"minecraft:diamond"}]]

Throw item on the ground.

/data modify entity @n[type=item] Fire set value 500

The above command should set the item on fire.

Notice it drops the Diamond when the bundle is destroyed.

/give @s stick[minecraft:bundle_contents=[{count:1, id:"minecraft:diamond"}]]

Throw item on the ground.

/data modify entity @n[type=item] Fire set value 500

The above command should set the item on fire.

Notice how nothing is dropped when the item is destroyed.