Remove shipping callback for Venmo express button (3324)

[Dinamiko]

Venmo button is not rendered in express checkout buttons due to a JS SDK error:

Steps To Reproduce

• Set WC store country as US and currency to US Dollar
• Add product to cart and visit block checkout page
  • Venmo button container is empty
  • JS error “venmo is not eligible” in browser console

Possible cause

When including onShippingOptionsChange and/or onShippingAddressChange to the Venmo button, it currently throws the JS error.

We are already checking for the above condition here but the JS SDK error is thrown before that check is reached.

Suggested solution

Add an early condition for venmo that will be executed before JS SDK is executed.