raidboss: prevent chat trigger ready check (#4298)
raidboss: prevent chat trigger ready check (#4298)

fixes ReadyCheck alert bug #4294
thank yimo for finding the such message channel code

Co-authored-by: yimo <f7df98f813acdc6ea65583fa5ed5bf4bc5664d3a@users.noreply.github.com>
quisquous/cactbot,quisquous/cactbot,quisquous/cactbot,quisquous/cactbot,quisquous/cactbot,quisquous/cactbot