On macOS, ResizableFrame won't let frame be sized to bottom of display

[stevemcleod]

On macOS, the ResizableFrame refuses to let the frame be resized to within roughly 20 pixels of the bottom of the screen.

Here's repro code (it creates a ridiculously oversized green border for detecting window-resizing mouse drags):

import com.jidesoft.swing.ResizableFrame;

import javax.swing.*;
import java.awt.*;

public class ScratchSpace {

    public static void main(String[] args) {
        SwingUtilities.invokeLater(() -> {
            ResizableFrame frame = new ResizableFrame("Resizable test");
            frame.setBorder(BorderFactory.createLineBorder(Color.GREEN, 10));
            JLabel label = new JLabel("Hello cruel world");
            label.setBorder(BorderFactory.createEmptyBorder(100, 100, 100, 100));
            frame.add(label);
            frame.pack();
            frame.setLocationRelativeTo(null);
            frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
            frame.setVisible(true);
        });
    }
}