[New build - MECH PREVIEW] 24w25a: Hotfixes, physics improvements

Many fixes with several related to mechs.
The physics engine has been improved: now the center of gravity and moment of inertia take into account each children entity position, making mechs more stable.

Hotfixes:

• #5804 Rotator Join incorrect hitbox.
  
• #5806 Dropdown setting box can clip text.
  
• #5810 No key at 0 when using symmetry
  
• #5808 Mech with inverter feet rotator dont align feet to terrain properly.
  
• #5805 Rotator reset angle target on config screen exit.
  
• #5807 Cannot copy-paste mechanism in survival
  
• #5809 Collision with power cell built on children entity.
  
• #5797 Turret issue with the new rotator join.
  

Thanks for playing!