regen plugin: don't show regen if widget is hidden

Don't render the regen meter if the minimap orb is hidden. Noticeable
during cutscenes and if the minimap is hidden in general.

runelite-client/src/main/java/net/runelite/client/plugins/regenmeter/RegenMeterOverlay.java

@@ -88,7 +88,7 @@ public class RegenMeterOverlay extends Overlay
 	private void renderRegen(Graphics2D g, WidgetInfo widgetInfo, double percent, Color color)
 	{
 		Widget widget = client.getWidget(widgetInfo);
-		if (widget == null)
+		if (widget == null || widget.isHidden())
 		{
 			return;
 		}