The presence of some data components cannot be checked in predicates

The presence of any data component, regardless of its exact value, is intended to be able to be checked within entity/block/item predicates via the predicates field.

Inexplicably, this works for all data components except for:

• enchantments

• potion_contents

• stored_enchantments

• villager/variant

Steps to Reproduce:

1. Open a world with cheats enabled, or join a server with operator permissions.

2. Paste into the chat window either this command

   execute if predicate {condition:"entity_properties",entity:"this",predicate:{predicates:{"minecraft:potion_contents":{}}}}

   or this command

   execute if items entity @s weapon.mainhand *[minecraft:potion_contents~{}]

   (they both show the same error, but the latter may be easier to navigate the component options as you can see the tab-complete list).

3. Try different data component IDs and see that they all are accepted, except for these 4 for some reason.

Expected Behavior:

The predicate can check for the existence of any data component by writing an empty object as its predicate.

Observed Behavior:

Only the previously mentioned 4 data components cause an error such as:

Malformed 'minecraft:potion_contents' predicate: 'Failed to parse either. First: Not a string; Second: Failed to parse either. First: Not a list: {}; Second: Not a string'