Fix Chunk#isSlimeChunk when all-chunks-are-slime-chunks is true (#7211)

patches/server/0048-All-chunks-are-slime-spawn-chunks-toggle.patch

@@ -31,3 +31,16 @@ index 19a2702d9053037203c192d7f26f3c9afbe6f782..11aefbf65b0e63777d6ed5bfdb18c7f7
  
              if (random.nextInt(10) == 0 && flag && pos.getY() < 40) {
                  return checkMobSpawnRules(type, world, spawnReason, pos, random);
+diff --git a/src/main/java/org/bukkit/craftbukkit/CraftChunk.java b/src/main/java/org/bukkit/craftbukkit/CraftChunk.java
+index 92a33a23764e8ca1e2e6b2b0feb6caca2a5dfc56..6c47771e0168e958b22c987bcd8bc100f6208c10 100644
+--- a/src/main/java/org/bukkit/craftbukkit/CraftChunk.java
++++ b/src/main/java/org/bukkit/craftbukkit/CraftChunk.java
+@@ -218,7 +218,7 @@ public class CraftChunk implements Chunk {
+     @Override
+     public boolean isSlimeChunk() {
+         // 987234911L is deterimined in EntitySlime when seeing if a slime can spawn in a chunk
+-        return WorldgenRandom.seedSlimeChunk(this.getX(), this.getZ(), this.getWorld().getSeed(), worldServer.spigotConfig.slimeSeed).nextInt(10) == 0;
++        return this.worldServer.paperConfig.allChunksAreSlimeChunks || WorldgenRandom.seedSlimeChunk(this.getX(), this.getZ(), this.getWorld().getSeed(), worldServer.spigotConfig.slimeSeed).nextInt(10) == 0; // Paper
+     }
+ 
+     @Override