### 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)

} break;
			case GDScriptParser::Node::RETURN: {
				const GDScriptParser::ReturnNode *return_n = static_cast<const GDScriptParser::ReturnNode *>(s);
				GDScriptCodeGenerator::Address return_value;
				if (return_n->return_value != nullptr) {
					return_value = _parse_expression(codegen, err, return_n->return_value);
					if (err) {
						return err;
					}
				}
				gen->write_return(return_value);
				if (return_value.mode == GDScriptCodeGenerator::Address::TEMPORARY) {
					codegen.generator->pop_temporary();
				}
			} break;
			case GDScriptParser::Node::ASSERT: {
#ifdef DEBUG_ENABLED
				const GDScriptParser::AssertNode *as = static_cast<const GDScriptParser::AssertNode *>(s);
				GDScriptCodeGenerator::Address condition = _parse_expression(codegen, err, as->condition);
				if (err) {
					return err;
				}
				GDScriptCodeGenerator::Address message;
				if (as->message) {
					message = _parse_expression(codegen, err, as->message);
					if (err) {
						return err;
					}
				}
				gen->write_assert(condition, message);