feat: enhance FileEditor and FileEditorNavTabs with overflow handling

- Added overflow hidden to the FileEditor component to prevent content overflow and maintain layout integrity.
- Updated FileEditorNavTabs to use overflow-x for horizontal scrolling while hiding vertical overflow, improving navigation usability.

These changes enhance the user experience by ensuring a cleaner and more controlled layout in the file editing interface.

src/components/ui/file/FileEditor.vue

@@ -442,6 +442,7 @@ defineOptions({ name: 'ClFileEditor' });
 .file-editor {
   height: 100%;
   display: flex;
+  overflow: hidden;
 
   .file-editor-content {
     position: relative;

src/components/ui/file/FileEditorNavTabs.vue

@@ -179,7 +179,8 @@ defineOptions({ name: 'ClFileEditorNavTabs' });
   position: relative;
   display: flex;
   align-items: center;
-  overflow: auto;
+  overflow-x: auto;
+  overflow-y: hidden;
   height: var(--cl-file-editor-nav-tabs-height);
   flex: var(--cl-file-editor-nav-tabs-height) 0 0;