### 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 middle_mouse_paste_enabled;
}
void LineEdit::set_selecting_enabled(bool p_enabled) {
	if (selecting_enabled == p_enabled) {
		return;
	}
	selecting_enabled = p_enabled;
	if (!selecting_enabled) {
		deselect();
	}
}
bool LineEdit::is_selecting_enabled() const {
	return selecting_enabled;
}
void LineEdit::set_deselect_on_focus_loss_enabled(const bool p_enabled) {
	if (deselect_on_focus_loss_enabled == p_enabled) {
		return;
	}
	deselect_on_focus_loss_enabled = p_enabled;
	if (p_enabled && selection.enabled && !has_focus()) {
		deselect();
	}
}
bool LineEdit::is_deselect_on_focus_loss_enabled() const {
	return deselect_on_focus_loss_enabled;
}
void LineEdit::set_drag_and_drop_selection_enabled(const bool p_enabled) {
	drag_and_drop_selection_enabled = p_enabled;
}
bool LineEdit::is_drag_and_drop_selection_enabled() const {