Boss improvements, Portal Bug fix, (and +)

Boss Improvements:

• Spheres Rng Improvements:
  • With 2 HP: It will necessarily spawn two spheres at the top
  • With 1 HP: It will necessarily spawn three spheres at the top

• Double Jump Indication At The Shockwave Attack

• Some (few) players unable to enter lobby portals
• Shadow did not appear in the desert trap