### 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)

accept_event();
			return;
		}
		if (is_middle_mouse_paste_enabled() && b->is_pressed() && b->get_button_index() == MouseButton::MIDDLE && is_editable() && DisplayServer::get_singleton()->has_feature(DisplayServer::FEATURE_CLIPBOARD_PRIMARY)) {
			String paste_buffer = DisplayServer::get_singleton()->clipboard_get_primary().strip_escapes();
			deselect();
			set_caret_at_pixel_pos(b->get_position().x);
			if (!paste_buffer.is_empty()) {
				insert_text_at_caret(paste_buffer);
				if (!text_changed_dirty) {
					if (is_inside_tree()) {
						MessageQueue::get_singleton()->push_call(this, "_text_changed");
					}
					text_changed_dirty = true;
				}
			}
			grab_focus();
			accept_event();
			return;
		}
		if (b->get_button_index() != MouseButton::LEFT) {
			return;
		}
		_reset_caret_blink_timer();
		if (b->is_pressed()) {
			accept_event(); 
			if (!text.is_empty() && is_editable() && _is_over_clear_button(b->get_position())) {
				clear_button_status.press_attempt = true;
				clear_button_status.pressing_inside = true;
				queue_redraw();