### 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)
for (int i = 0; i < fa.size(); i++) {
					to_check.push_back(fa[i]);
				}
			} else if (assign == "importer_version") {
				version = value;
			} else if (assign == "importer") {
				importer_name = value;
			} else if (assign == "uid") {
				found_uid = true;
			} else if (!p_only_imported_files) {
				if (assign == "source_file") {
					source_file = value;
				} else if (assign == "dest_files") {
					dest_files = value;
				}
			}
		} else if (next_tag.name != "remap" && next_tag.name != "deps") {
			break;
		}
	}
	if (importer_name == "keep") {
		return false; 
	}
	if (!found_uid) {
		return true; 
	}
	Ref<ResourceImporter> importer = ResourceFormatImporter::get_singleton()->get_importer_by_name(importer_name);
	if (importer.is_null()) {
		return true; 
	}