### 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)

return underline_meta;
}
void RichTextLabel::set_hint_underline(bool p_underline) {
	underline_hint = p_underline;
	queue_redraw();
}
bool RichTextLabel::is_hint_underlined() const {
	return underline_hint;
}
void RichTextLabel::set_offset(int p_pixel) {
	vscroll->set_value(p_pixel);
}
void RichTextLabel::set_scroll_active(bool p_active) {
	if (scroll_active == p_active) {
		return;
	}
	scroll_active = p_active;
	vscroll->set_drag_node_enabled(p_active);
	queue_redraw();
}
bool RichTextLabel::is_scroll_active() const {
	return scroll_active;
}
void RichTextLabel::set_scroll_follow(bool p_follow) {
	scroll_follow = p_follow;
	if (!vscroll->is_visible_in_tree() || vscroll->get_value() >= (vscroll->get_max() - vscroll->get_page())) {
		scroll_following = true;
	}
}
bool RichTextLabel::is_scroll_following() const {