Change mouse wheel listener back to an interface as the instance map input listener uses it

Update instance map for new mouse wheel listener api

runelite-client/src/main/java/net/runelite/client/input/MouseWheelListener.java

@@ -26,10 +26,7 @@ package net.runelite.client.input;
 
 import java.awt.event.MouseWheelEvent;
 
-public abstract class MouseWheelListener
+public interface MouseWheelListener
 {
-	public MouseWheelEvent mouseWheelMoved(MouseWheelEvent event)
-	{
-		return event;
-	}
+	MouseWheelEvent mouseWheelMoved(MouseWheelEvent event);
 }

runelite-client/src/main/java/net/runelite/client/plugins/instancemap/InstanceMapInputListener.java

@@ -66,11 +66,11 @@ public class InstanceMapInputListener extends MouseListener implements KeyListen
 	}
 
 	@Override
-	public void mouseWheelMoved(MouseWheelEvent event)
+	public MouseWheelEvent mouseWheelMoved(MouseWheelEvent event)
 	{
 		if (!plugin.isMapShown())
 		{
-			return;
+			return event;
 		}
 
 		int direction = event.getWheelRotation();
@@ -85,6 +85,7 @@ public class InstanceMapInputListener extends MouseListener implements KeyListen
 		}
 
 		event.consume();
+		return event;
 	}
 
 	@Override

runelite-client/src/main/java/net/runelite/client/plugins/stretchedfixedmode/TranslateMouseListener.java

@@ -29,7 +29,6 @@ import java.awt.Component;
 import java.awt.Dimension;
 import java.awt.event.MouseEvent;
 import javax.inject.Inject;
-import javax.inject.Provider;
 import net.runelite.api.Client;
 import net.runelite.api.Constants;
 import net.runelite.client.input.MouseListener;

runelite-client/src/main/java/net/runelite/client/plugins/stretchedfixedmode/TranslateMouseWheelListener.java

@@ -29,12 +29,11 @@ import java.awt.Component;
 import java.awt.Dimension;
 import java.awt.event.MouseWheelEvent;
 import javax.inject.Inject;
-import javax.inject.Provider;
 import net.runelite.api.Client;
 import net.runelite.api.Constants;
 import net.runelite.client.input.MouseWheelListener;
 
-public class TranslateMouseWheelListener extends MouseWheelListener
+public class TranslateMouseWheelListener implements MouseWheelListener
 {
 	private final Client client;