fix: set ErrorWindow resizable only if the stacktrace is visible

Author: javier-godoy

src/main/java/com/flowingcode/vaadin/addons/errorwindow/ErrorWindow.java

@@ -118,7 +118,6 @@ private void initWindow() {
     }
     setWidth("800px");
     setCloseOnEsc(true);
-    setResizable(true);
     setDraggable(true);
     getElement().getThemeList().add("error-window");
     add(createMainLayout());
@@ -176,6 +175,7 @@ private Button createDetailsButtonLayout() {
               } else {
                 event.getSource().setIcon(VaadinIcon.PLUS.create());
               }
+              setResizable(visible);
               event.getSource().getElement()
                   .executeJs(
                       "var overlay = this.closest('vaadin-dialog-overlay'); if (overlay) overlay.$.overlay.style.height=''");