chat commands: fix detecting pb when completing leagues tasks

The league task message is in between the kc and pb messages, so just look for the pb message on the same tick as the kc message

runelite-client/src/main/java/net/runelite/client/plugins/chatcommands/ChatCommandsPlugin.java

@@ -137,6 +137,7 @@ public class ChatCommandsPlugin extends Plugin
 	private String pohOwner;
 	private HiscoreEndpoint hiscoreEndpoint; // hiscore endpoint for current player
 	private String lastBossKill;
+	private int lastBossTime = -1;
 	private int lastPb = -1;
 
 	@Inject
@@ -197,6 +198,7 @@ public class ChatCommandsPlugin extends Plugin
 	public void shutDown()
 	{
 		lastBossKill = null;
+		lastBossTime = -1;
 
 		keyManager.unregisterKeyListener(chatKeyboardListener);
 
@@ -279,6 +281,7 @@ public class ChatCommandsPlugin extends Plugin
 			else
 			{
 				lastBossKill = boss;
+				lastBossTime = client.getTickCount();
 			}
 			return;
 		}
@@ -310,6 +313,7 @@ public class ChatCommandsPlugin extends Plugin
 				lastPb = -1;
 			}
 			lastBossKill = boss;
+			lastBossTime = client.getTickCount();
 			return;
 		}
 
@@ -428,7 +432,11 @@ public class ChatCommandsPlugin extends Plugin
 			setKc("Hallowed Sepulchre", kc);
 		}
 
-		lastBossKill = null;
+		if (lastBossKill != null && lastBossTime != client.getTickCount())
+		{
+			lastBossKill = null;
+			lastBossTime = -1;
+		}
 	}
 
 	private static int timeStringToSeconds(String timeString)