### Godot version

v4.2.dev4.official [549fcce5f]

### System information

Windows 10

### Issue description

`scene/main/node.cpp:1757 - Parameter "p_node" is null.` when attempting to type after using find function. Does not happen in 4.2dev3.

https://github.com/godotengine/godot/assets/3820082/4a2818f7-cc3b-4b46-a0b1-5bc6a85b4abc


### Steps to reproduce

1) Open any script in the script editor
2) Ctrl+F to select some text that exists in the script
3) Hit escape to re-focus the script editor without placing the caret
4) Attempt to type



### Minimal reproduction project

[find-mrp.zip](https://github.com/godotengine/godot/files/12555561/find-mrp.zip)

ERR_FAIL_INDEX((int)p_alignment, 4);
	if (alignment == p_alignment) {
		return;
	}
	alignment = p_alignment;
	_shape();
	queue_redraw();
}
HorizontalAlignment LineEdit::get_horizontal_alignment() const {
	return alignment;
}
Variant LineEdit::get_drag_data(const Point2 &p_point) {
	Variant ret = Control::get_drag_data(p_point);
	if (ret != Variant()) {
		return ret;
	}
	if (selection.drag_attempt && selection.enabled) {
		String t = get_selected_text();
		Label *l = memnew(Label);
		l->set_text(t);
		set_drag_preview(l);
		return t;
	}
	return Variant();
}
bool LineEdit::can_drop_data(const Point2 &p_point, const Variant &p_data) const {