Turtle Egg block model has stretched texture

The model for the turtle egg doesn't match the texture.

The model of the first egg is 5x7x5, but it uses a 4x7x4 texture instead.
The model of the fourth egg is 3x3x3, but it uses a 4x4x4 texture instead.

The recent snapshot 19w08a fixed that by changing the model.

 

Relates to MC-129855