Armor stand can auto-step up blocks

Summary:
Armor stand can auto-step up blocks (0.5 block + 1 pixel). It does not match the boat and items (this was removed in Java in version 1.13 -> MC-133544).

Steps to reproduce:

1. Place a water source.
2. Place a slab at the water's edge.
3. Place the armor stand in the flowing water in front of the slab.

Observed results:
Armor stand auto-step up on the slab.

Expected results:
Armor stand can't auto-step up on the slab.

Video:
Java
Minecraft 1.20.1 - Singleplayer 2023-07-29 16-09-44.mp4
Bedrock
Minecraft 2023-07-29 15-56-45.mp4