Mob spawner block_entity_data does not copy SpawnData data to missing SpawnPotentials

When using /setblock to create a spawner with only "SpawnData" supplied, that data is automatically copied into "SpawnPotentials" such that the same entity will always spawn.

For example, the following /setblock command shows the intended behavior:

/setblock ~ ~ ~ spawner{SpawnData:{entity:{id:zombie}}}

A rough example of what the spawner's data becomes, indicating that the list of entities to spawn is only that which was defined in SpawnData:

{SpawnData:{entity:{id:"minecraft:zombie"}},SpawnPotentials:[{weight:1,data:{entity:{id:"minecraft:zombie"}}}]}

However, the block_entity_data component does not cause this copy to happen. Instead, given the following /give command (which is expected to have the exact same result as /setblock when placed):

/give @s spawner[block_entity_data={id:spawner,SpawnData:{entity:{id:zombie}}}]

The data becomes:

{SpawnData:{entity:{id:"minecraft:zombie"}},SpawnPotentials:[]}

The difference being that the SpawnPotentials did not copy the zombie over like it does with /setblock.