clientui: fix client repositioning on maximize

Don't repositition the client on maximize or restore on Windows, as the resize is perform by the native ShowWindow method which always will have the window at the correct size and position.

runelite-client/src/main/java/net/runelite/client/ui/ClientUI.java

@@ -1106,6 +1106,7 @@ public void mouseClicked(MouseEvent e)
 
 	private class Layout implements LayoutManager2
 	{
+		private int prevState;
 		private int previousContentWidth;
 
 		@Override
@@ -1144,6 +1145,9 @@ public Dimension minimumLayoutSize(Container content)
 		@Override
 		public void layoutContainer(Container content)
 		{
+			int changed = prevState ^ frame.getExtendedState();
+			prevState = frame.getExtendedState();
+
 			Component client = content.getComponent(0);
 			Component sidebar = content.getComponent(1);
 
@@ -1199,7 +1203,10 @@ public void layoutContainer(Container content)
 			sidebar.setBounds(clientWidth, 0, sidebarWidth, height);
 
 			frame.revalidateMinimumSize();
-			frame.containedSetSize(frame.getPreferredSize());
+			if (OSType.getOSType() != OSType.Windows || (changed & Frame.MAXIMIZED_BOTH) == 0)
+			{
+				frame.containedSetSize(frame.getPreferredSize());
+			}
 
 			log.trace("finishing layout - content={} client={} sidebar={} frame={}", content.getWidth(), client.getWidth(), sidebar.getWidth(), frame.getWidth());
 		}