### 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.
}
	pop_completion_call();
	pop_multiline();
	consume(GDScriptTokenizer::Token::PARENTHESIS_CLOSE, R"*(Expected ")" after preload path.)*");
	complete_extents(preload);
	return preload;
}
GDScriptParser::ExpressionNode *GDScriptParser::parse_lambda(ExpressionNode *p_previous_operand, bool p_can_assign) {
	LambdaNode *lambda = alloc_node<LambdaNode>();
	lambda->parent_function = current_function;
	FunctionNode *function = alloc_node<FunctionNode>();
	function->source_lambda = lambda;
	function->is_static = current_function != nullptr ? current_function->is_static : false;
	if (match(GDScriptTokenizer::Token::IDENTIFIER)) {
		function->identifier = parse_identifier();
	}
	bool multiline_context = multiline_stack.back()->get();
	
	push_multiline(false);
	if (multiline_context) {
		tokenizer.push_expression_indented_block();
	}
	push_multiline(true); 
	if (function->identifier) {
		consume(GDScriptTokenizer::Token::PARENTHESIS_OPEN, R"(Expected opening "(" after lambda name.)");
	} else {
		consume(GDScriptTokenizer::Token::PARENTHESIS_OPEN, R"(Expected opening "(" after "func".)");
	}
	FunctionNode *previous_function = current_function;
	current_function = function;