Fix IllegalArgumentException for /paper mobcaps command (#7472)

patches/server/Add-paper-mobcaps-and-paper-playermobcaps.patch

@@ -281,6 +281,9 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
  
 +    // Paper start
 +    public static int globalLimitForCategory(final ServerLevel level, final MobCategory category, final int spawnableChunkCount) {
++        if (category == MobCategory.MISC) {
++            return -1;
++        }
 +        final int categoryLimit = level.getWorld().getSpawnLimit(CraftSpawnCategory.toBukkit(category));
 +        if (categoryLimit < 1) {
 +            return categoryLimit;