### 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)

return !(this->operator==(p_other));
		}
		void operator=(const DataType &p_other) {
			kind = p_other.kind;
			type_source = p_other.type_source;
			is_constant = p_other.is_constant;
			is_meta_type = p_other.is_meta_type;
			is_coroutine = p_other.is_coroutine;
			builtin_type = p_other.builtin_type;
			native_type = p_other.native_type;
			enum_type = p_other.enum_type;
			script_type = p_other.script_type;
			script_path = p_other.script_path;
			class_type = p_other.class_type;
			method_info = p_other.method_info;
			enum_values = p_other.enum_values;
			unset_container_element_type();
			if (p_other.has_container_element_type()) {
				set_container_element_type(p_other.get_container_element_type());
			}
		}
		DataType() = default;