Effect changes and fixes

• Elder Guardian Curse: Reduced the Mining Fatigue time by half
• Cake Day: Clears all negative potion effects
• Fixed 'Circle of Protection' stacking multiple copies of itself into just one circle when there's multiple players in the world, causing performance issues the more players there are
• Fixed 'Circle of Protection' not updating its colors when killing a mob or deflecting an arrow
• Fixed 'juan' not granting Resistance
• Fixed incorrect spawning positions for a few mob effects
• Fixed some inconsistencies with effect modifiers like Positive/Negative effects
• Fixed and updated Presets

This might be the last patch for v1.6 unless some major issue is found. An update is planned after Minecraft 26.4 releases!