[10.98] Monsters animations like Fire Elemental are not working

**Describe the bug**
Fire elemental don't change sprites.
I don't know if this is related to idle animations or it's a different bug.

**To Reproduce**
See a Fire Elemental on screen.

**Expected behavior**
See it change from sprite one to sprite two to look like it's on fire.

**Environment**
1. Latest OTClient
2. Protocol 10.98
3. Windows 10
