[platform] unneeded 'invokeLater()' call - revert

The second call is needed to handle the event queue switch.

platform/platform-main/src/com/intellij/idea/MainImpl.java

@@ -42,7 +42,12 @@ public class MainImpl {
             StartupUtil.runStartupWizard();
           }
 
-          new IdeaApplication(args).run();
+          IdeaApplication app = new IdeaApplication(args);
+          //noinspection SSBasedInspection
+          SwingUtilities.invokeLater(() -> {
+            PluginManager.installExceptionHandler();
+            app.run();
+          });
         });
       }
     });