The entity shadows of happy ghasts are too small in relation to the size of their models

The Bug:

The entity shadows of happy ghasts are too small in relation to the size of their models.

Steps to Reproduce:

1. Enable entity shadows in your video settings.

2. Summon a happy ghast by using the command provided below.

   /summon minecraft:happy_ghast ~ ~1 ~ {NoAI:1b,Silent:1b}

3. Look at the size of its shadow.

Observed Behavior:

The entity shadow is too small.

Expected Behavior:

The entity shadow would be made slightly larger to match the size of its model.