### 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)

DisplayServer::get_singleton()->clipboard_set_primary(get_selected_text());
			}
			if (!text.is_empty() && is_editable() && clear_button_enabled) {
				bool press_attempt = clear_button_status.press_attempt;
				clear_button_status.press_attempt = false;
				if (press_attempt && clear_button_status.pressing_inside && _is_over_clear_button(b->get_position())) {
					clear();
					return;
				}
			}
			if ((!selection.creating) && (!selection.double_click)) {
				deselect();
			}
			selection.creating = false;
			selection.double_click = false;
			if (!drag_action) {
				selection.drag_attempt = false;
			}
			if (pending_select_all_on_focus) {
				select_all();
				pending_select_all_on_focus = false;
			}
			show_virtual_keyboard();
		}
		queue_redraw();
		return;
	}
	Ref<InputEventMouseMotion> m = p_event;
	if (m.is_valid()) {
		if (!text.is_empty() && is_editable() && clear_button_enabled) {