Summoned Sulfur Cube with spawnEvent Parameter Spawns as Passive Baby and Loses AI

Description: When using the /summon command to create a sulfur_cube and specifying any spawnEvent parameter (e.g., abort_sheltering), the resulting entity spawns in a permanent baby state and lacks standard AI, including movement.

Steps to Reproduce:

1. Execute the command /summon sulfur_cube ~~~. Observe the summoned Sulfur Cube behaves normally (has AI, can be adult).

2. Execute the command /summon sulfur_cube ~~~ abort_sheltering (or with any other valid spawnEvent tag).

3. Observe the state and behavior of the newly summoned Sulfur Cube.

Observed Result: The Sulfur Cube summoned in Step 2 is permanently in its baby/small size variant and displays no autonomous AI behavior (e.g., it does not move, seek blocks, or react normally to the player or environment).

Expected Result: Specifying a spawnEvent parameter in the /summon command should not alter the default age or fundamental AI state of the Sulfur Cube. The summoned entity should be a standard, functional adult Sulfur Cube capable of normal behavior.