Add method to remove all active potion effects (#9361)

* Add method to remove all active potion effects

* use clear instead of removeAll

patches/api/0418-Add-method-to-remove-all-active-potion-effects.patch

@@ -0,0 +1,26 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jake Potrebic <jake.m.potrebic@gmail.com>
+Date: Sat, 17 Jun 2023 13:17:20 -0700
+Subject: [PATCH] Add method to remove all active potion effects
+
+
+diff --git a/src/main/java/org/bukkit/entity/LivingEntity.java b/src/main/java/org/bukkit/entity/LivingEntity.java
+index ffca32ae2464ea5a669029079a50585ca259a4f8..9712f7140933d7fc87c5838c173e2d818b70cfde 100644
+--- a/src/main/java/org/bukkit/entity/LivingEntity.java
++++ b/src/main/java/org/bukkit/entity/LivingEntity.java
+@@ -565,6 +565,15 @@ public interface LivingEntity extends Attributable, Damageable, ProjectileSource
+     @NotNull
+     public Collection<PotionEffect> getActivePotionEffects();
+ 
++    // Paper start - LivingEntity#clearActivePotionEffects();
++    /**
++     * Removes all active potion effects for this entity.
++     *
++     * @return true if any were removed
++     */
++    boolean clearActivePotionEffects();
++    // Paper end
++
+     /**
+      * Checks whether the living entity has block line of sight to another.
+      * <p>

patches/server/0976-Add-method-to-remove-all-active-potion-effects.patch

@@ -0,0 +1,24 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jake Potrebic <jake.m.potrebic@gmail.com>
+Date: Sat, 17 Jun 2023 13:17:25 -0700
+Subject: [PATCH] Add method to remove all active potion effects
+
+
+diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
+index 7880631fe8a4b06f29ef69ab850129737a99521b..19212795df4024cfb2b9f56e1efcd4c9f20d1d83 100644
+--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
++++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
+@@ -490,6 +490,13 @@ public class CraftLivingEntity extends CraftEntity implements LivingEntity {
+         return effects;
+     }
+ 
++    // Paper start - LivingEntity#clearActivePotionEffects();
++    @Override
++    public boolean clearActivePotionEffects() {
++        return this.getHandle().removeAllEffects(EntityPotionEffectEvent.Cause.PLUGIN);
++    }
++    // Paper end
++
+     @Override
+     public <T extends Projectile> T launchProjectile(Class<? extends T> projectile) {
+         return this.launchProjectile(projectile, null);