Health Boost effect with amplifier 255 stops rendering hearts at 4 rows (UI / Rendering Bug)

In Minecraft Preview, when applying the Health Boost effect with an amplifier of 255 (e.g., ⁠/effect @s health_boost infinite 255 true⁠), the hearts on the screen stop rendering after 4 rows and do not cover the screen or display correctly. 

However, the player's actual health itself is correctly increased and functions according to the amplifier value (it is just a visual rendering limitation in the GUI). 

Steps to Reproduce:

1. Switch to a world in Minecraft Preview. 

1. Run the command to apply Health Boost IIIN (255): ⁠/effect @s health_boost infinite 255 true⁠. 

1. Observe the health bar (hearts) on the HUD. 

Observed Result:

The hearts stop rendering at 4 rows, failing to display the full amount of health visually. 

Expected Result:

The hearts should scale or wrap correctly to reflect the full 255 amplifier health value on the screen.