### 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)

#include "gdscript_warning.h"
#include "core/variant/variant.h"
#ifdef DEBUG_ENABLED
String GDScriptWarning::get_message() const {
#define CHECK_SYMBOLS(m_amount) ERR_FAIL_COND_V(symbols.size() < m_amount, String());
	switch (code) {
		case UNASSIGNED_VARIABLE_OP_ASSIGN: {
			CHECK_SYMBOLS(1);
			return "Using assignment with operation but the variable '" + symbols[0] + "' was not previously assigned a value.";
		} break;
		case UNASSIGNED_VARIABLE: {
			CHECK_SYMBOLS(1);
			return "The variable '" + symbols[0] + "' was used but never assigned a value.";
		} break;
		case UNUSED_VARIABLE: {
			CHECK_SYMBOLS(1);
			return "The local variable '" + symbols[0] + "' is declared but never used in the block. If this is intended, prefix it with an underscore: '_" + symbols[0] + "'";
		} break;
		case UNUSED_LOCAL_CONSTANT: {
			CHECK_SYMBOLS(1);
			return "The local constant '" + symbols[0] + "' is declared but never used in the block. If this is intended, prefix it with an underscore: '_" + symbols[0] + "'";