### 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)

Ref<Texture2D> r_icon = display_clear_icon ? theme_cache.clear_icon : right_icon;
		if (alignment == HORIZONTAL_ALIGNMENT_CENTER) {
			if (Math::is_zero_approx(scroll_offset)) {
				x_ofs = MAX(style->get_margin(SIDE_LEFT), int(get_size().width - text_width - r_icon->get_width() - style->get_margin(SIDE_RIGHT) * 2) / 2);
			}
		} else {
			x_ofs = MAX(style->get_margin(SIDE_LEFT), x_ofs - r_icon->get_width() - style->get_margin(SIDE_RIGHT));
		}
		ofs_max -= r_icon->get_width();
	}
	
	Vector2 primary_caret_offset = get_caret_pixel_pos();
	if (MIN(primary_caret_offset.x, primary_caret_offset.y) <= x_ofs) {
		scroll_offset += x_ofs - MIN(primary_caret_offset.x, primary_caret_offset.y);
	} else if (MAX(primary_caret_offset.x, primary_caret_offset.y) >= ofs_max) {
		scroll_offset += ofs_max - MAX(primary_caret_offset.x, primary_caret_offset.y);
	}
	scroll_offset = MIN(0, scroll_offset);
	queue_redraw();
}
int LineEdit::get_caret_column() const {
	return caret_column;
}
void LineEdit::set_scroll_offset(float p_pos) {
	scroll_offset = p_pos;
	if (scroll_offset < 0.0) {
		scroll_offset = 0.0;
	}
}
float LineEdit::get_scroll_offset() const {