### 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)

GDScriptParser::DataType true_type;
	if (p_ternary_op->true_expr) {
		true_type = p_ternary_op->true_expr->get_datatype();
	} else {
		true_type.kind = GDScriptParser::DataType::VARIANT;
	}
	GDScriptParser::DataType false_type;
	if (p_ternary_op->false_expr) {
		false_type = p_ternary_op->false_expr->get_datatype();
	} else {
		false_type.kind = GDScriptParser::DataType::VARIANT;
	}
	if (true_type.is_variant() || false_type.is_variant()) {
		result.kind = GDScriptParser::DataType::VARIANT;
	} else {
		result = true_type;
		if (!is_type_compatible(true_type, false_type)) {
			result = false_type;
			if (!is_type_compatible(false_type, true_type)) {
				result.type_source = GDScriptParser::DataType::UNDETECTED;
				result.kind = GDScriptParser::DataType::VARIANT;
#ifdef DEBUG_ENABLED
				parser->push_warning(p_ternary_op, GDScriptWarning::INCOMPATIBLE_TERNARY);
#endif
			}
		}
	}
	p_ternary_op->set_datatype(result);
}
void GDScriptAnalyzer::reduce_unary_op(GDScriptParser::UnaryOpNode *p_unary_op) {