Remove explicit reference to ScaledGraphics in Zest label

The method `getAbsoluteScaled()` is defined in the `Graphics` class and
returns `1.0` by default. A type-check for `ScaledGraphics` is therefore
not needed.

Contributes to #901

Author: ptziegler

org.eclipse.zest.core/src/org/eclipse/zest/core/widgets/internal/CachedLabel.java

@@ -25,7 +25,6 @@
 import org.eclipse.draw2d.Graphics;
 import org.eclipse.draw2d.Label;
 import org.eclipse.draw2d.SWTGraphics;
-import org.eclipse.draw2d.ScaledGraphics;
 import org.eclipse.draw2d.geometry.Point;
 import org.eclipse.draw2d.geometry.Rectangle;
 
@@ -164,7 +163,7 @@ public void setBounds(Rectangle rect) {
 
 	@Override
 	protected void paintFigure(Graphics graphics) {
-		if (graphics instanceof ScaledGraphics sg && sg.getAbsoluteScale() < 0.30) {
+		if (graphics.getAbsoluteScale() < 0.30) {
 			return;
 		}
 		if (!cacheLabel) {

org.eclipse.zest.core/src/org/eclipse/zest/core/widgets/internal/GraphLabel.java

@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright 2005-2010, 2024 CHISEL Group, University of Victoria, Victoria,
+ * Copyright 2005-2010, 2025 CHISEL Group, University of Victoria, Victoria,
  *                           BC, Canada.
  *
  * This program and the accompanying materials are made available under the
@@ -24,7 +24,6 @@
 import org.eclipse.draw2d.FigureUtilities;
 import org.eclipse.draw2d.Graphics;
 import org.eclipse.draw2d.MarginBorder;
-import org.eclipse.draw2d.ScaledGraphics;
 import org.eclipse.draw2d.StackLayout;
 import org.eclipse.draw2d.geometry.Dimension;
 import org.eclipse.draw2d.geometry.Rectangle;
@@ -161,11 +160,7 @@ public void paint(Graphics graphics) {
 
 		int safeBorderWidth = borderWidth > 0 ? borderWidth : 1;
 		graphics.pushState();
-		double scale = 1;
-
-		if (graphics instanceof ScaledGraphics) {
-			scale = ((ScaledGraphics) graphics).getAbsoluteScale();
-		}
+		double scale = graphics.getAbsoluteScale();
 		// Top part inside the border (as fillGradient does not allow to fill a
 		// rectangle with round corners).
 		Rectangle rect = getBounds().getCopy();