### Godot version

4.0 fb10f45

### System information

Windows 10 x64

### Issue description

Behold, empty TileSet editor, with no TileMap node nor bottom button visible:
![image](https://github.com/godotengine/godot/assets/2223172/0f052770-4946-40eb-a790-a995dbe2599c)
Regression from #72277 (most likely, I didn't test)

### Steps to reproduce

1. Add some Node to your scene
2. Add a TileMap as a child
3. Select TileMap
4. Fold its parent in the scene tree
5. Restart the editor
6. The TileMap selection is restored and so is the folded node, resulting in a weird paradox

### Minimal reproduction project

N/A
} break;
		case FILE_SAVE: {
			int index = shader_tabs->get_current_tab();
			ERR_FAIL_INDEX(index, shader_tabs->get_tab_count());
			TextShaderEditor *editor = edited_shaders[index].shader_editor;
			if (editor && editor->get_trim_trailing_whitespace_on_save()) {
				editor->trim_trailing_whitespace();
			}
			if (edited_shaders[index].shader.is_valid()) {
				EditorNode::get_singleton()->save_resource(edited_shaders[index].shader);
			} else {
				EditorNode::get_singleton()->save_resource(edited_shaders[index].shader_inc);
			}
			if (editor) {
				editor->tag_saved_version();
			}
		} break;
		case FILE_SAVE_AS: {
			int index = shader_tabs->get_current_tab();
			ERR_FAIL_INDEX(index, shader_tabs->get_tab_count());
			TextShaderEditor *editor = edited_shaders[index].shader_editor;
			if (editor && editor->get_trim_trailing_whitespace_on_save()) {
				editor->trim_trailing_whitespace();
			}
			String path;
			if (edited_shaders[index].shader.is_valid()) {
				path = edited_shaders[index].shader->get_path();
				if (!path.is_resource_file()) {
					path = "";
				}