* Update UBRS/Pyroguard Emberseer script to fix issues and increase accuracy.
- Remove EVENT_PLAYER_CHECK which was causing triggering the fight to work only sporadically
- Break out pre-enter-combat phase to better emulate actual timing. Fixes DBM timing being off
- Pre-enter-combat sequence starts as soon as the adds are engaged, not after 32 seconds
- disable fire shield during pre-enter-combat to keep the fight from resetting
- remove faster add despawn which doesn't appear to be in the WotLK Classic version
- remove adds doing EVENT_ENCAGE every 10-20s, which was unneccesary and caused them to glitch move around the player
* Small change to pre-add timing.
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