### Godot version

v4.0.3.stable.official [5222a99f5]
Master [6101240231600c871f5c5473872532c68ea3268c] (confirmed by https://github.com/godotengine/godot/issues/77666#issuecomment-1568952502)

### System information

Window 10

### Issue description

References are not unreferenced at the end of `if` scopes.

### Steps to reproduce

Copy, paste and run the snippet below, check the results:

```gdscript
extends Node


func _ready() -> void:
  var ref := RefCounted.new()
  var ref_count : int

  # OK
  ref_count = ref.get_reference_count()
  print('Expected: 1, Result: %d' % ref_count)

  # OK
  if true:
    var temp := ref
    temp = null

  ref_count = ref.get_reference_count()
  print('Expected: 1, Result: %d' % ref_count)

  # FAIL
  if true:
    var temp := ref

  ref_count = ref.get_reference_count()
  print('Expected: 1, Result: %d' % ref_count)
```

Output example:

```
Expected: 1, Result: 1
Expected: 1, Result: 1
Expected: 1, Result: 2
```

### Minimal reproduction project

N/A
return;
	}
	switch (p_expression->type) {
		case Node::ARRAY:
			print_array(static_cast<ArrayNode *>(p_expression));
			break;
		case Node::ASSIGNMENT:
			print_assignment(static_cast<AssignmentNode *>(p_expression));
			break;
		case Node::AWAIT:
			print_await(static_cast<AwaitNode *>(p_expression));
			break;
		case Node::BINARY_OPERATOR:
			print_binary_op(static_cast<BinaryOpNode *>(p_expression));
			break;
		case Node::CALL:
			print_call(static_cast<CallNode *>(p_expression));
			break;
		case Node::CAST:
			print_cast(static_cast<CastNode *>(p_expression));
			break;
		case Node::DICTIONARY:
			print_dictionary(static_cast<DictionaryNode *>(p_expression));
			break;
		case Node::GET_NODE:
			print_get_node(static_cast<GetNodeNode *>(p_expression));
			break;
		case Node::IDENTIFIER:
			print_identifier(static_cast<IdentifierNode *>(p_expression));
			break;