### 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 st_parser;
}
void LineEdit::set_structured_text_bidi_override_options(Array p_args) {
	st_args = p_args;
	_shape();
	queue_redraw();
}
Array LineEdit::get_structured_text_bidi_override_options() const {
	return st_args;
}
void LineEdit::clear() {
	clear_internal();
	_text_changed();
	
	if (has_focus()) {
		show_virtual_keyboard();
	}
}
void LineEdit::show_virtual_keyboard() {
	if (DisplayServer::get_singleton()->has_feature(DisplayServer::FEATURE_VIRTUAL_KEYBOARD) && virtual_keyboard_enabled) {
		if (selection.enabled) {
			DisplayServer::get_singleton()->virtual_keyboard_show(text, get_global_rect(), DisplayServer::VirtualKeyboardType(virtual_keyboard_type), max_length, selection.begin, selection.end);
		} else {
			DisplayServer::get_singleton()->virtual_keyboard_show(text, get_global_rect(), DisplayServer::VirtualKeyboardType(virtual_keyboard_type), max_length, caret_column);
		}
	}
}
String LineEdit::get_text() const {