### Godot version

v4.1.stable.official [970459615]

### System information

Godot v4.1.stable - Windows 10.0.22621 - Vulkan (Forward+) - dedicated NVIDIA GeForce MX330 (NVIDIA; 30.0.15.1169) - 11th Gen Intel(R) Core(TM) i5-1135G7 @ 2.40GHz (8 Threads)

### Issue description

Calling `RichTextLabel`'s `select_all` method has no visual indicator, but it must have one. 

### Steps to reproduce

- Add `RichTextLabel` node
- Set `selection_enabled` value to be `true`
- Call `$RichTextLabel.select_all() `method in `_ready`

### Minimal reproduction project

[RichTextLabel_bug.zip](https://github.com/godotengine/godot/files/12098913/RichTextLabel_bug.zip)

update_minimum_size();
	}
	queue_redraw();
}
void RichTextLabel::_remove_item(Item *p_item, const int p_line, const int p_subitem_line) {
	int size = p_item->subitems.size();
	if (size == 0) {
		p_item->parent->subitems.erase(p_item);
		
		if (p_item->type == ITEM_NEWLINE) {
			current_frame->lines.remove_at(p_line);
			if (p_line < (int)current_frame->lines.size() && current_frame->lines[p_line].from) {
				for (List<Item *>::Element *E = current_frame->lines[p_line].from->E; E; E = E->next()) {
					if (E->get()->line > p_subitem_line) {
						E->get()->line--;
					}
				}
			}
		}
	} else {
		
		while (p_item->subitems.size()) {
			_remove_item(p_item->subitems.front()->get(), p_line, p_subitem_line);
		}
		
		p_item->parent->subitems.erase(p_item);
	}
	memdelete(p_item);
}
void RichTextLabel::add_image(const Ref<Texture2D> &p_image, const int p_width, const int p_height, const Color &p_color, InlineAlignment p_alignment, const Rect2 &p_region) {