### 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)

if (p_await->to_await == nullptr) {
		GDScriptParser::DataType await_type;
		await_type.kind = GDScriptParser::DataType::VARIANT;
		p_await->set_datatype(await_type);
		return;
	}
	GDScriptParser::DataType awaiting_type;
	if (p_await->to_await->type == GDScriptParser::Node::CALL) {
		reduce_call(static_cast<GDScriptParser::CallNode *>(p_await->to_await), true);
		awaiting_type = p_await->to_await->get_datatype();
	} else {
		reduce_expression(p_await->to_await);
	}
	if (p_await->to_await->is_constant) {
		p_await->is_constant = p_await->to_await->is_constant;
		p_await->reduced_value = p_await->to_await->reduced_value;
		awaiting_type = p_await->to_await->get_datatype();
	} else {
		awaiting_type.kind = GDScriptParser::DataType::VARIANT;
		awaiting_type.type_source = GDScriptParser::DataType::UNDETECTED;
	}
	p_await->set_datatype(awaiting_type);
#ifdef DEBUG_ENABLED
	awaiting_type = p_await->to_await->get_datatype();
	if (!(awaiting_type.has_no_type() || awaiting_type.is_coroutine || awaiting_type.builtin_type == Variant::SIGNAL)) {
		parser->push_warning(p_await, GDScriptWarning::REDUNDANT_AWAIT);
	}
#endif
}
void GDScriptAnalyzer::reduce_binary_op(GDScriptParser::BinaryOpNode *p_binary_op) {