Added a new Mid Boss Rejuvenator Symbol with three visual states (not spawned, under 1 min from spawn, and spawned).
The new large amount of breakables in the mid boss middle area now initially spawn at the same time as mid boss.
Fixed turrets shooting midboss if it's invulnerable to them (i.e. an enemy or ally was in the pit, they would shoot it but do no damage). It will shoot the mid boss if you're in the pit (which will allow them to damage mid boss). Same treatment for Weakened Patron.