feat: add styles to content to keep compatibility with previous version

Author: paodb

src/main/java/com/flowingcode/vaadin/addons/orgchart/OrgChart.java

@@ -53,6 +53,7 @@
 @CssImport("orgchart/dist/css/jquery.orgchart.min.css")
 @Tag("fc-orgchart")
 @JsModule("./fc-orgchart.js")
+@CssImport("./fc-orgchart-styles.css")
 public class OrgChart extends Div {
 
   private OrgChartItem orgChartItem;

src/main/resources/META-INF/resources/frontend/fc-orgchart-styles.css

@@ -0,0 +1,27 @@
+/*-
+ * #%L
+ * OrgChart Add-on
+ * %%
+ * Copyright (C) 2017 - 2023 Flowing Code S.A.
+ * %%
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * #L%
+ */
+ 
+.orgchart .node {
+	width: 140px;
+}
+
+.orgchart .node .content {
+	overflow: hidden;
+}