loot tracker: fix race with loading saved loot and client startup

switchProfile can be run in early client startup via either startUp or the profile change event caused from the client remember username feature. Item compositions cannot be accessed this early and will throw an exception, causing the loot to fail to load.

runelite-client/src/main/java/net/runelite/client/plugins/loottracker/LootTrackerPlugin.java

@@ -486,6 +486,13 @@ public class LootTrackerPlugin extends Plugin
 
 			clientThread.invokeLater(() ->
 			{
+				// convertToLootTrackerRecord requires item compositions to be available to get the item name,
+				// so it can't be run while the client is starting
+				if (client.getGameState().getState() < GameState.LOGIN_SCREEN.getState())
+				{
+					return false;
+				}
+
 				// convertToLootTrackerRecord must be called on client thread
 				List<LootTrackerRecord> records = loots.stream()
 					.map(this::convertToLootTrackerRecord)
@@ -495,6 +502,8 @@ public class LootTrackerPlugin extends Plugin
 					panel.clearRecords();
 					panel.addRecords(records);
 				});
+
+				return true;
 			});
 		});
 	}