keyremapping: use modified key map for mapping key release

This cleans up the code some and is more-correct since it will eg. no
longer remap fkeys on keyrelease even when it was not remapped on
keypress.

runelite-client/src/test/java/net/runelite/client/plugins/keyremapping/KeyRemappingListenerTest.java

@@ -99,9 +99,9 @@ public class KeyRemappingListenerTest
 
 		verify(event).consume();
 
+		lenient().when(keyRemappingPlugin.isTyping()).thenReturn(true); // release handler no longer checks this
 		// with the plugin now in typing mode, previously pressed and remapped keys should still be mapped
 		// on key release regardless
-		when(keyRemappingPlugin.isTyping()).thenReturn(true);
 		event = mock(KeyEvent.class);
 		when(event.getKeyCode()).thenReturn(KeyEvent.VK_D);
 		keyRemappingListener.keyReleased(event);