Fix Shell.print() on macOS to render child controls

The macOS implementation was just returning false without printing children,
similar to a previously fixed Windows issue. Now it properly iterates through
child controls and prints them with correct coordinate transformations using
NSAffineTransform and NSGraphicsContext state management.

Author: Copilot

bundles/org.eclipse.swt/Eclipse SWT/cocoa/org/eclipse/swt/widgets/Shell.java

@@ -1404,7 +1404,23 @@ public boolean print (GC gc) {
 	checkWidget ();
 	if (gc == null) error (SWT.ERROR_NULL_ARGUMENT);
 	if (gc.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT);
-	return false;
+	// Print only the client area (children) without shell decorations
+	Control [] children = _getChildren ();
+	for (Control child : children) {
+		Rectangle bounds = child.getBounds();
+		// Save the graphics state before transforming
+		NSGraphicsContext.static_saveGraphicsState();
+		NSGraphicsContext.setCurrentContext(gc.handle);
+		// Create and apply translation transform for child's position
+		NSAffineTransform transform = NSAffineTransform.transform();
+		transform.translateXBy(bounds.x, bounds.y);
+		transform.concat();
+		// Print the child control
+		child.print(gc);
+		// Restore the graphics state
+		NSGraphicsContext.static_restoreGraphicsState();
+	}
+	return true;
 }
 
 @Override