Rite of Returning 1.0.66

Rite of Mortal Severance update:
- Adds the Phobetor-style circular tentacle wall to the Mortal Severance buildup.
- Tentacle wall grows over the 3-minute buildup.
- Top bossbar timer shows buildup countdown.
- During the Cursed Soul fight, the top bar shows boss health and revivals left.
- During deconstruction, the top timer bar shows restoration countdown.
