fix: #I7UE8N 修复另存文件名固定的问题

.gitignore

@@ -4,6 +4,7 @@ target/
 !**/src/test/**/target/
 
 ### IntelliJ IDEA ###
+.idea/
 .idea/modules.xml
 .idea/jarRepositories.xml
 .idea/compiler.xml

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

@@ -33,7 +33,7 @@ public class SaveAsFile implements EventHandler<ActionEvent> {
         Tab selectedTab = tabPane.getSelectionModel().getSelectedItem();
         if (selectedTab != null) {
             FileChooser fileChooser = new FileChooser();
-            fileChooser.setInitialFileName("新建文本");
+            fileChooser.setInitialFileName(selectedTab.getText());
             fileChooser.getExtensionFilters().add(new FileChooser.ExtensionFilter("文本文档", "*.txt"));
             File file = fileChooser.showSaveDialog(null);
             if (file != null) {