### 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 clear_button_enabled;
}
void LineEdit::set_shortcut_keys_enabled(bool p_enabled) {
	shortcut_keys_enabled = p_enabled;
}
bool LineEdit::is_shortcut_keys_enabled() const {
	return shortcut_keys_enabled;
}
void LineEdit::set_virtual_keyboard_enabled(bool p_enable) {
	virtual_keyboard_enabled = p_enable;
}
bool LineEdit::is_virtual_keyboard_enabled() const {
	return virtual_keyboard_enabled;
}
void LineEdit::set_virtual_keyboard_type(VirtualKeyboardType p_type) {
	virtual_keyboard_type = p_type;
}
LineEdit::VirtualKeyboardType LineEdit::get_virtual_keyboard_type() const {
	return virtual_keyboard_type;
}
void LineEdit::set_middle_mouse_paste_enabled(bool p_enabled) {
	middle_mouse_paste_enabled = p_enabled;
}
bool LineEdit::is_middle_mouse_paste_enabled() const {