### Godot version

4.0.3-stable

### System information

Windows 10

### Issue description

In some projects ViewportTexture remains pink and doesn't render viewport content after upgrading from 4.0.2-stable to 4.0.3-stable. If a pair of files viewport.h/viewport.cpp are downgraded back to what they were in 4.0.2-stable, problem goes away.

This is how it looks in 4.0.3-stable:
![4 0 3_stable_viewport_4 0 3](https://github.com/godotengine/godot/assets/1449921/44c191a9-4b67-4b02-90b6-4ab615f62a73)

And this is how it looks if viewport.h/viewport.cpp are downgraded back to what they were in 4.0.2-stable.
![4 0 3_stable_viewport_4 0 2](https://github.com/godotengine/godot/assets/1449921/f5abc605-f129-4222-9c0e-e9a07621dd9d)



### Steps to reproduce

Unfortunately, I cannot come up wit a simple demo project reproducing the problem. It exists in some projects and doesn't exist in others.


### Minimal reproduction project

Cannot produce a simple project reproducing the problem. In simple projects it works fine.
if (!p_node->is_visible()) {
		return nullptr; 
	}
	Transform2D matrix = p_xform * p_node->get_transform();
	
	if (matrix.determinant() == 0.0f) {
		return nullptr;
	}
	Control *c = Object::cast_to<Control>(p_node);
	if (!c || !c->is_clipping_contents() || c->has_point(matrix.affine_inverse().xform(p_global))) {
		for (int i = p_node->get_child_count() - 1; i >= 0; i--) {
			CanvasItem *ci = Object::cast_to<CanvasItem>(p_node->get_child(i));
			if (!ci || ci->is_set_as_top_level()) {
				continue;
			}
			Control *ret = _gui_find_control_at_pos(ci, p_global, matrix);
			if (ret) {
				return ret;
			}
		}
	}
	if (!c || c->data.mouse_filter == Control::MOUSE_FILTER_IGNORE) {
		return nullptr;
	}
	matrix.affine_invert();
	if (!c->has_point(matrix.xform(p_global))) {
		return nullptr;
	}
	Control *drag_preview = _gui_get_drag_preview();