entities set on fire do not retain orange or soul fire types

When an entity is set on fire, the burning animation will always be orange fire, even if the entity was set on fire by soul fire.

To recreate this bug, set any mob on fire using soul fire, the mob then burns with the default orange fire texture.
This is true for items and players.

The fix would be to add a simple check for the last fire type (normal or soul fire) that set the entity on fire