### Godot version

4.0.2

### System information

Ubuntu 22.04.1 LTS

### Issue description

So far I've found these ones:

![Screenshot from 2023-05-10 17-56-42](https://github.com/godotengine/godot/assets/85438892/b161b14a-cb7d-46fe-8398-816bf354a929)
![Screenshot from 2023-05-10 18-01-02](https://github.com/godotengine/godot/assets/85438892/b0fefcfb-4246-4ebb-ae7b-dd798d7a1d63)

But there are likely more like them. They are invalid, at least in the context I encountered them here (at the beginning of a regular line of script)

### Steps to reproduce

Type `Anchor` in the code editor.

### Minimal reproduction project

N/A
if (!opt.replace("/", "_").is_valid_identifier()) {
						
						
						opt = opt.quote(opt.contains("'") ? "\"" : quote_style); 
					}
					ScriptLanguage::CodeCompletionOption option(opt, ScriptLanguage::CODE_COMPLETION_KIND_NODE_PATH);
					options.insert(option.display, option);
				}
				
				for (const KeyValue<StringName, ProjectSettings::AutoloadInfo> &E : ProjectSettings::get_singleton()->get_autoload_list()) {
					String path = "/root/" + E.key;
					ScriptLanguage::CodeCompletionOption option(path.quote(quote_style), ScriptLanguage::CODE_COMPLETION_KIND_NODE_PATH);
					options.insert(option.display, option);
				}
			}
		} break;
		case GDScriptParser::COMPLETION_SUPER_METHOD: {
			if (!completion_context.current_class) {
				break;
			}
			_find_identifiers_in_class(completion_context.current_class, true, false, true, options, 0);
		} break;
	}
	for (const KeyValue<String, ScriptLanguage::CodeCompletionOption> &E : options) {
		r_options->push_back(E.value);
	}
	return OK;
}
#else
Error GDScriptLanguage::complete_code(const String &p_code, const String &p_path, Object *p_owner, List<ScriptLanguage::CodeCompletionOption> *r_options, bool &r_forced, String &r_call_hint) {