when dragon clan use forged edict, dragon trigger kittsuki shomon. forged edict is normally work?

as a result of kittsuki shomon`s ability, dragon`s courtier don`t gain dishonor.

in this way, forged edict is consider not triggered?

Forged Edict will still cancel the effects of the event.

From the Rules Reference, under Replacement Effects (I have bolded the relevant line).

A replacement effect is an effect (usually an interrupt) that replaces the resolution of a triggering condition with a different means of resolving the same triggering condition, but in such a manner that the triggering condition is still considered to occur for the purposes of paying non-sacrifice costs . The word "instead" is frequently indicative of such an effect. After all interrupts to the triggering condition have resolved and it is time to resolve the triggering condition itself, the replacement effect resolves instead.