Placed ArmorStand has always predetermined pose

Relates to:

• MC-80974
• MC-80975

When you place an ArmorStand, its body parts will be always rotated slightly. I don't know if this is intended, but it causes some problems:

• One leg is always slightly tilted
• The head is tilted
• The head looks next to a player when standing directly in front of it
• The body is slightly rotated
• Both arms are tilted