### 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
if (p_variable->property == VariableNode::PROP_INLINE) {
				push_line(":");
				increase_indent();
				print_suite(p_variable->getter->body);
				decrease_indent();
			} else {
				push_line(" =");
				increase_indent();
				print_identifier(p_variable->getter_pointer);
				push_line();
				decrease_indent();
			}
		}
		if (p_variable->setter != nullptr) {
			push_text("Set (");
			if (p_variable->property == VariableNode::PROP_INLINE) {
				if (p_variable->setter_parameter != nullptr) {
					print_identifier(p_variable->setter_parameter);
				} else {
					push_text("<missing>");
				}
				push_line("):");
				increase_indent();
				print_suite(p_variable->setter->body);
				decrease_indent();
			} else {
				push_line(" =");
				increase_indent();
				print_identifier(p_variable->setter_pointer);
				push_line();