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Changes proposed in this Pull Request:

An 'Invalid payment method' error shows when a user double clicks the'Delete' button in the 'Add Payment method screen'. Every time the user clicks the button, there is a GET request to delete the payment method. First request is handled correctly, but subsequent requests throw an error, because the payment method cannot be found since it was already deleted.

This is a video of the bug, taken from the issue.

To avoid firing the multiple requests, this PR adds an event handler to the buttons in the Payment method table. The event is attached to the table tbody and delegated to .payment-method-actions .button. When the event handler is executed, it will check if the button has .disabled class. If the button is not disabled, it will add this class and the GET request will fire. If the button is disabled, it calls preventDefault in the event, to avoid firing the request.

I'd like to merge this PR to avoid confusion for the user and I also think there is a little performance gain since we are sparing some requests that will end up throwing an error.

Closes #30862

How to test the changes in this Pull Request:

Prerequisites
You'll need to upload and activate the WooCommerce Payments plugin, to be able to add and remove payment methods in the user's account

1. Log in with a valid shop user
2. Go to My Account > Payment Methods
3. Add a Payment method
4. On Payment methods table, double click on 'Delete' button
5. Check that the payment method is correctly removed and there are no errors displayed to the user

This the behavior with the fix applied:

Other information:

• Have you added an explanation of what your changes do and why you'd like us to include them?
• Have you written new tests for your changes, as applicable?
• Have you successfully run tests with your changes locally?

Changelog entry

Enter a summary of all changes on this Pull Request. This will appear in the changelog if accepted.

• Fix 'Invalid payment method' error upon double click 'Delete' button on Add Payment methods screen

FOR PR REVIEWER ONLY:

• I have reviewed that everything is sanitized/escaped appropriately for any SQL or XSS injection possibilities. I made sure Linting is not ignored or disabled.