newui: 修复 tab 关闭后不能再次打开的问题

Author: yiding-he

src/main/java/com/xwintop/xJavaFxTool/newui/NewLauncherService.java

@@ -53,6 +53,7 @@ public void loadPlugin(PluginJarInfo pluginJarInfo) {
 
         Tab tab = PluginLoader.loadPluginAsTab(pluginJarInfo, tabPane);
         if (tab != null) {
+            tab.setOnClosed(event -> this.jarInfoMap.remove(tab));
             jarInfoMap.put(tab, pluginJarInfo);
         }
     }