Fixed Scroll Pane Starting Position In Immersive Dialogs

- Ensured that scroll panes in immersive dialogs start scrolled to the top by adding a `SwingUtilities.invokeLater` call.

Author: IllianiBird

MekHQ/src/mekhq/gui/baseComponents/immersiveDialogs/ImmersiveDialogCore.java

@@ -285,6 +285,8 @@ private JPanel createCenterBox(String centerMessage, List<ButtonLabelTooltipPair
         JScrollPane scrollPane = new JScrollPane(editorPane);
         scrollPane.setMinimumSize(new Dimension(CENTER_WIDTH, scrollPane.getHeight()));
         scrollPane.setBorder(BorderFactory.createEmptyBorder());
+        // This line ensures the scroll pane starts scrolled to the top, not bottom.
+        SwingUtilities.invokeLater(() -> scrollPane.getViewport().setViewPosition(new Point(0, 0)));
 
         // Create a container with a border for the padding
         JPanel scrollPaneContainer = new JPanel(new BorderLayout());