nightmarezone: Fix area check to exclude KBD lair

Fixes #3692

runelite-client/src/main/java/net/runelite/client/plugins/nightmarezone/NightmareZonePlugin.java

@@ -243,6 +243,12 @@ public class NightmareZonePlugin extends Plugin
 
 	public boolean isInNightmareZone()
 	{
-		return Arrays.equals(client.getMapRegions(), NMZ_MAP_REGION);
+		if (client.getLocalPlayer() == null)
+		{
+			return false;
+		}
+
+		// NMZ and the KBD lair uses the same region ID but NMZ uses planes 1-3 and KBD uses plane 0
+		return client.getLocalPlayer().getWorldLocation().getPlane() > 0 && Arrays.equals(client.getMapRegions(), NMZ_MAP_REGION);
 	}
 }