fix: #I7WXRO 修复关联文件打开失败的问题

src/main/java/org/jcnc/jnotepad/controller/event/handler/OpenFile.java

@@ -74,7 +74,7 @@ public class OpenFile implements EventHandler<ActionEvent> {
      *
      * @param file 文件对象
      */
-    protected void openFile(File file) {
+    public void openFile(File file) {
         ThreadPoolManager.getThreadPool().submit(createOpenFileTask(file));
     }
 

src/main/java/org/jcnc/jnotepad/controller/manager/Controller.java

@@ -49,7 +49,7 @@ public class Controller implements ControllerInterface {
     public void openAssociatedFile(String filePath) {
         File file = new File(filePath);
         if (file.exists() && file.isFile()) {
-            new OpenFile().createOpenFileTask(file);
+            new OpenFile().openFile(file);
         }
     }
 }