Payment Buttons Block: Undo button will not remove the block

### What is the issue

On a self-hosted site using the Jetpack plugin, once a Payment Buttons block is added to a post or page it isn't possible to remove it with the undo button. With most other blocks, after adding the block and making none or a few changes, clicking the undo button will undo any changes and then remove the block (as a demo you can try with the Business Hours block).

To reproduce:
- Create a new post or edit a template in the Site editor
- Add the Payment Buttons block
- Click undo
- Verify the block is not removed

Demo:

https://github.com/Automattic/jetpack/assets/16754605/9506f110-9604-475c-849f-d2880196bbd6

### Likely next steps

The issue is most likely due to attributes that are being set on first mount, likely within a `useEffect`. This was the case for the Contact Form Block - https://github.com/Automattic/jetpack/pull/36485 - and Donations Block - https://github.com/Automattic/jetpack/issues/37185

Start with the Payment Buttons block implementation and inspect attributes set during its initial mount, especially any useEffect logic. Compare the behavior with the Contact Form Block pull request #36485 and Donations Block issue #37185. Reproduce the listed editor steps and consider the work done when Undo removes the newly added block.

Written by the indexing model from the issue text.