MapWithAIProvidersPanel: Fix EDT violation

Signed-off-by: Taylor Smock <tsmock@fb.com>

src/main/java/org/openstreetmap/josm/plugins/mapwithai/gui/preferences/mapwithai/MapWithAIProvidersPanel.java

@@ -826,7 +826,7 @@ public class MapWithAIProvidersPanel extends JPanel {
 
         @Override
         public void changeEvent(MapWithAIInfo modified) {
-            updateEnabledState();
+            GuiHelper.runInEDT(this::updateEnabledState);
         }
     }