bank: block bank pin going to chatbox

With invokeLater() now running next tick instead of next frame, with uncapped fps there can be several frames with the bank pin visible in the chatbox. This blocks the keyboard input on this tick, preventing having to clear the chatbox later.

runelite-api/src/main/java/net/runelite/api/VarClientInt.java

@@ -62,6 +62,11 @@ public enum VarClientInt
 
 	INVENTORY_TAB(171),
 
+	/**
+	 * time to block keypresses til
+	 */
+	BLOCK_KEYPRESS(187),
+
 	WORLD_MAP_SEARCH_FOCUSED(190);
 
 	private final int index;