### Godot version

v4.0.beta13.official [caacade56]

### System information

Windows 8.1

### Issue description

The `Unreachable code (statement after return) in function 'function_name()'` warning is given for functions that do not have unreachable code. The same code does not give this warning in v3.5.stable.official [991bb6ac7].

### Steps to reproduce

```
func warning(i: int) -> void:
  if i == 0:
    pass
  elif i == 1:
    return
  else:
    return
  print("yeah")
```

Removing either the `elif` or the `else` removes the warning.

### Minimal reproduction project

N/A; code in reproduction steps can be placed in any blank gdscript file to trigger the error.
current_class->extends_used = true;
	int chain_index = 0;
	if (match(GDScriptTokenizer::Token::LITERAL)) {
		if (previous.literal.get_type() != Variant::STRING) {
			push_error(vformat(R"(Only strings or identifiers can be used after "extends", found "%s" instead.)", Variant::get_type_name(previous.literal.get_type())));
		}
		current_class->extends_path = previous.literal;
		if (!match(GDScriptTokenizer::Token::PERIOD)) {
			return;
		}
	}
	make_completion_context(COMPLETION_INHERIT_TYPE, current_class, chain_index++);
	if (!consume(GDScriptTokenizer::Token::IDENTIFIER, R"(Expected superclass name after "extends".)")) {
		return;
	}
	current_class->extends.push_back(previous.literal);
	while (match(GDScriptTokenizer::Token::PERIOD)) {
		make_completion_context(COMPLETION_INHERIT_TYPE, current_class, chain_index++);
		if (!consume(GDScriptTokenizer::Token::IDENTIFIER, R"(Expected superclass name after ".".)")) {
			return;
		}
		current_class->extends.push_back(previous.literal);
	}
}
template <class T>
void GDScriptParser::parse_class_member(T *(GDScriptParser::*p_parse_function)(), AnnotationInfo::TargetKind p_target, const String &p_member_kind) {
	advance();
#ifdef TOOLS_ENABLED
	int doc_comment_line = previous.start_line - 1;
#endif