Example in the docs: Clipboard operations demo throws an error if `paste` is clicked before `copy`

[AMBudnik]

Description

Clipboard operations demo throws an error if paste is clicked before copy. Reported on Slack at https://handsoncode.slack.com/archives/C031GBX62SE/p1679694557095759

Steps to reproduce

1. Click paste button to see the error

result

Demo

on the page

Your environment

• HyperFormula version: 2.3.1
• Browser Name and version: Chrome 111
• Operating System: macOS Ventura

Links

Clipboard operations - https://hyperformula.handsontable.com/guide/clipboard-operations.html#demo

[sequba]

The exception should be handled by the demo.