LWOSkillComponent::msgStartSkill (0x00d45cb0) starts no cooldown for cast
types 1 and 2, and inserts the cooldown (std::map insert), so a cooldown
group already running keeps its time left. The server started one for
every cast type and extended a running group to the longer cooldown.
Live client casts used cast types 0, 3 and 4.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>