### Godot version

v4.0.beta11.official [91713ced8]

### System information

macOS 13.1

### Issue description

When using a function with a return type of `void` as the return value of another function with a return type of `void`, the following error occurs: 
> Cannot get return value of call to "foo()" because it returns "void"

This wasn't a problem in Godot 3.x and Godot 4.x until now. Seems it's related to https://github.com/godotengine/godot/pull/70702. 

I understand why this is happening, but I'd expect to be able to use functions like this that return `void` because they both use the matching return type. It seems overly strict.

In a real world example I use this to return early when switching states in a FSM:

```gdscript
func _process(_delta: float) -> void:
  if player.is_grounded():
    return state_machine.transition_to("ground") # returns void

  if player.is_on_wall():
    return state_machine.transition_to("wall") # returns void
```

### Steps to reproduce

```gdscript
extends Node

func foo() -> void:
	print("hello")

func _ready() -> void:
	return foo()
```

### Minimal reproduction project

[godot_4_return_value_regression.zip](https://github.com/godotengine/godot/files/10385377/godot_4_return_value_regression.zip)

base_type = make_builtin_meta_type(GDScriptParser::get_builtin_type(base_id->name));
		} else {
			reduce_expression(subscript->base);
			base_type = subscript->base->get_datatype();
			is_self = subscript->base->type == GDScriptParser::Node::SELF;
		}
	} else {
		
		
		p_call->set_datatype(call_type);
		mark_node_unsafe(p_call);
		return;
	}
	bool is_static = false;
	bool is_vararg = false;
	int default_arg_count = 0;
	GDScriptParser::DataType return_type;
	List<GDScriptParser::DataType> par_types;
	bool is_constructor = (base_type.is_meta_type || (p_call->callee && p_call->callee->type == GDScriptParser::Node::IDENTIFIER)) && p_call->function_name == SNAME("new");
	if (get_function_signature(p_call, is_constructor, base_type, p_call->function_name, return_type, par_types, default_arg_count, is_static, is_vararg)) {
		
		for (const KeyValue<int, GDScriptParser::ArrayNode *> &E : arrays) {
			int index = E.key;
			if (index < par_types.size() && par_types[index].has_container_element_type()) {
				update_array_literal_element_type(E.value, par_types[index].get_container_element_type());
			}
		}
		validate_call_arg(par_types, default_arg_count, is_vararg, p_call);
		if (base_type.kind == GDScriptParser::DataType::ENUM && base_type.is_meta_type) {