### 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 text;
}
void LineEdit::set_placeholder(String p_text) {
	if (placeholder == p_text) {
		return;
	}
	placeholder = p_text;
	placeholder_translated = atr(placeholder);
	_shape();
	queue_redraw();
}
String LineEdit::get_placeholder() const {
	return placeholder;
}
void LineEdit::set_caret_column(int p_column) {
	if (p_column > (int)text.length()) {
		p_column = text.length();
	}
	if (p_column < 0) {
		p_column = 0;
	}
	caret_column = p_column;
	
	if (!is_inside_tree()) {
		scroll_offset = 0.0;
		return;
	}
	Ref<StyleBox> style = theme_cache.normal;
	bool rtl = is_layout_rtl();