### Godot version

4.0 beta (e1648b3327431a09cc9498663fac483275eb711d)

### System information

Mageia 9, Linux

### Issue description

When exporting a project with no attached script (or with only a builtin GDScript), the following error is printed:
```
ERROR: Can't open file from path 'res://.godot/global_script_class_cache.cfg'.
   at: get_file_as_bytes (core/io/file_access.cpp:699)
```

And while the export succeeds, when running the project, it prints:
```
ERROR: Couldn't find the given section "" and key "list", and no default was given.
   at: get_value (core/io/config_file.cpp:86)
```

We should ensure that this file is always created, regardless of whether there are scripts to parse for class names or not. It should always contain at least `list=[]`.

### Steps to reproduce

- Create new project
- Create main scene with no script
- Export

### Minimal reproduction project

[NewProj.zip](https://github.com/godotengine/godot/files/10547125/NewProj.zip)
Ref<ConfigFile> cf;
			cf.instantiate();
			Error err = cf->load(p_file + ".import");
			if (err == OK) {
				if (cf->has_section("params")) {
					List<String> sk;
					cf->get_section_keys("params", &sk);
					for (const String &E : sk) {
						params[E] = cf->get_value("params", E);
					}
				}
				if (cf->has_section("remap")) {
					if (p_custom_importer.is_empty()) {
						importer_name = cf->get_value("remap", "importer");
					}
					if (cf->has_section_key("remap", "uid")) {
						String uidt = cf->get_value("remap", "uid");
						uid = ResourceUID::get_singleton()->text_to_id(uidt);
					}
				}
			}
		}
	}
	if (importer_name == "keep") {
		
		fs->files[cpos]->modified_time = FileAccess::get_modified_time(p_file);
		fs->files[cpos]->import_modified_time = FileAccess::get_modified_time(p_file + ".import");
		fs->files[cpos]->deps.clear();
		fs->files[cpos]->type = "";
		fs->files[cpos]->import_valid = false;