[Drill Demon] [Suggestion] Ignore other event VarbitChanged when inside Drill Demon event

[Infinitay]

Similar to #40, it seems that when the exercise updates for the Drill Demon random event, it also fires changes for the Prison Pete and Capt' Arnav's Chest random event Varbits.

[Infinitay]

Furthermore, when you're doing the pirate random event, a drill demon exercise varbit also changes r.r.drilldemon.DrillDemonHelper - Drill Demon exercise varbit changed to unknown value: 6