### 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)

set_caret_column(caret_column_tmp);
				insert_text_at_caret(p_data);
			}
		} else if (selection.enabled && caret_column >= selection.begin && caret_column <= selection.end) {
			caret_column_tmp = selection.begin;
			selection_delete();
			set_caret_column(caret_column_tmp);
			insert_text_at_caret(p_data);
			grab_focus();
		} else {
			insert_text_at_caret(p_data);
			grab_focus();
		}
		select(caret_column_tmp, caret_column);
		if (!text_changed_dirty) {
			if (is_inside_tree()) {
				MessageQueue::get_singleton()->push_call(this, "_text_changed");
			}
			text_changed_dirty = true;
		}
		queue_redraw();
	}
}
Control::CursorShape LineEdit::get_cursor_shape(const Point2 &p_pos) const {
	if ((!text.is_empty() && is_editable() && _is_over_clear_button(p_pos)) || (!is_editable() && (!is_selecting_enabled() || text.is_empty()))) {
		return CURSOR_ARROW;
	}
	return Control::get_cursor_shape(p_pos);
}
bool LineEdit::_is_over_clear_button(const Point2 &p_pos) const {