### 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)

return drag_and_drop_selection_enabled;
}
void LineEdit::set_right_icon(const Ref<Texture2D> &p_icon) {
	if (right_icon == p_icon) {
		return;
	}
	right_icon = p_icon;
	_fit_to_width();
	update_minimum_size();
	queue_redraw();
}
Ref<Texture2D> LineEdit::get_right_icon() {
	return right_icon;
}
void LineEdit::set_flat(bool p_enabled) {
	if (flat != p_enabled) {
		flat = p_enabled;
		queue_redraw();
	}
}
bool LineEdit::is_flat() const {
	return flat;
}
void LineEdit::set_select_all_on_focus(bool p_enabled) {
	select_all_on_focus = p_enabled;
}
bool LineEdit::is_select_all_on_focus() const {
	return select_all_on_focus;
}
void LineEdit::clear_pending_select_all_on_focus() {