### 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.
}
	push_completion_call(call);
	int argument_index = 0;
	do {
		make_completion_context(ct, call, argument_index++, true);
		if (check(GDScriptTokenizer::Token::PARENTHESIS_CLOSE)) {
			
			break;
		}
		bool use_identifier_completion = current.cursor_place == GDScriptTokenizer::CURSOR_END || current.cursor_place == GDScriptTokenizer::CURSOR_MIDDLE;
		ExpressionNode *argument = parse_expression(false);
		if (argument == nullptr) {
			push_error(R"(Expected expression as the function argument.)");
		} else {
			call->arguments.push_back(argument);
			if (argument->type == Node::IDENTIFIER && use_identifier_completion) {
				completion_context.type = COMPLETION_IDENTIFIER;
			}
		}
		ct = COMPLETION_CALL_ARGUMENTS;
	} while (match(GDScriptTokenizer::Token::COMMA));
	pop_completion_call();
	pop_multiline();
	consume(GDScriptTokenizer::Token::PARENTHESIS_CLOSE, R"*(Expected closing ")" after call arguments.)*");
	complete_extents(call);
	return call;
}
GDScriptParser::ExpressionNode *GDScriptParser::parse_get_node(ExpressionNode *p_previous_operand, bool p_can_assign) {
	if (!current.is_node_name() && !check(GDScriptTokenizer::Token::LITERAL) && !check(GDScriptTokenizer::Token::SLASH) && !check(GDScriptTokenizer::Token::PERCENT)) {
		push_error(vformat(R"(Expected node path as string or identifier after "%s".)", previous.get_name()));