[2793] Add missing instance data check for Pyroguard Emberseer

Conflicts:
	sd2_revision_nr.h
[2797] Fix tiny logic issue in Scarlet Monastary script. Thanks to Jethrogibbs for pointing

Conflicts:
	scripts/eastern_kingdoms/scarlet_monastery/boss_mograine_and_whitemane.cpp
	sd2_revision_nr.h